1115864560 has 40 divisors (see below), whose sum is σ = 2596530240. Its totient is φ = 445976832.

The previous prime is 1115864551. The next prime is 1115864591. The reversal of 1115864560 is 654685111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104761 + ... + 114919.

It is an arithmetic number, because the mean of its divisors is an integer number (64913256).

Almost surely, 2^1115864560 is an apocalyptic number.

1115864560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115864560 is an abundant number, since it is smaller than the sum of its proper divisors (1480665680).

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

1115864560 is a wasteful number, since it uses less digits than its factorization.

1115864560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11545 (or 11539 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 1115864560 is about 33404.5589702963. The cubic root of 1115864560 is about 1037.2190744700.

The spelling of 1115864560 in words is "one billion, one hundred fifteen million, eight hundred sixty-four thousand, five hundred sixty".