1162261920 has 192 divisors, whose sum is σ = 3979100160. Its totient is φ = 284083200.

The previous prime is 1162261907. The next prime is 1162261987. The reversal of 1162261920 is 291622611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280665 + ... + 284775.

It is an arithmetic number, because the mean of its divisors is an integer number (20724480).

Almost surely, 2^1162261920 is an apocalyptic number.

1162261920 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 1162261920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1989550080).

1162261920 is an abundant number, since it is smaller than the sum of its proper divisors (2816838240).

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

1162261920 is a wasteful number, since it uses less digits than its factorization.

1162261920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179 (or 4171 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1162261920 is about 34091.9626891735. The cubic root of 1162261920 is about 1051.4000733510.

The spelling of 1162261920 in words is "one billion, one hundred sixty-two million, two hundred sixty-one thousand, nine hundred twenty".