1162385280 has 384 divisors, whose sum is σ = 4643758080. Its totient is φ = 262434816.

The previous prime is 1162385261. The next prime is 1162385281. The reversal of 1162385280 is 825832611.

It is a happy number.

1162385280 is a `hidden beast` number, since 1 + 1 + 623 + 8 + 5 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×1162385280² = 2702279078321356800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162385281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5120527 + ... + 5120753.

It is an arithmetic number, because the mean of its divisors is an integer number (12093120).

Almost surely, 2^1162385280 is an apocalyptic number.

1162385280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1162385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321879040).

1162385280 is an abundant number, since it is smaller than the sum of its proper divisors (3481372800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1162385280 is a wasteful number, since it uses less digits than its factorization.

1162385280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1162385280 is about 34093.7718652542. The cubic root of 1162385280 is about 1051.4372698218.

The spelling of 1162385280 in words is "one billion, one hundred sixty-two million, three hundred eighty-five thousand, two hundred eighty".