1181028264 has 32 divisors (see below), whose sum is σ = 3179692320. Its totient is φ = 363393216.

The previous prime is 1181028263. The next prime is 1181028281. The reversal of 1181028264 is 4628201811.

It is not an unprimeable number, because it can be changed into a prime (1181028263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892362 + ... + 1892985.

It is an arithmetic number, because the mean of its divisors is an integer number (99365385).

Almost surely, 2^1181028264 is an apocalyptic number.

It is an amenable number.

1181028264 is an abundant number, since it is smaller than the sum of its proper divisors (1998664056).

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

1181028264 is a wasteful number, since it uses less digits than its factorization.

1181028264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785369 (or 3785365 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1181028264 is about 34366.0917766335. The cubic root of 1181028264 is about 1057.0286621857.

The spelling of 1181028264 in words is "one billion, one hundred eighty-one million, twenty-eight thousand, two hundred sixty-four".