1163858280 has 128 divisors (see below), whose sum is σ = 3775403520. Its totient is φ = 285327360.

The previous prime is 1163858263. The next prime is 1163858299. The reversal of 1163858280 is 828583611.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421384 + ... + 424136.

It is an arithmetic number, because the mean of its divisors is an integer number (29495340).

Almost surely, 2^1163858280 is an apocalyptic number.

1163858280 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 1163858280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887701760).

1163858280 is an abundant number, since it is smaller than the sum of its proper divisors (2611545240).

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

1163858280 is a wasteful number, since it uses less digits than its factorization.

1163858280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 1163858280 is about 34115.3672118592. The cubic root of 1163858280 is about 1051.8812171013.

The spelling of 1163858280 in words is "one billion, one hundred sixty-three million, eight hundred fifty-eight thousand, two hundred eighty".