1140864556 has 12 divisors (see below), whose sum is σ = 2150090992. Its totient is φ = 526552848.

The previous prime is 1140864499. The next prime is 1140864559. The reversal of 1140864556 is 6554680411.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1140864559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10969800 + ... + 10969903.

Almost surely, 2^1140864556 is an apocalyptic number.

It is an amenable number.

1140864556 is a deficient number, since it is larger than the sum of its proper divisors (1009226436).

1140864556 is a wasteful number, since it uses less digits than its factorization.

1140864556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21939720 (or 21939718 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1140864556 is about 33776.6865752104. The cubic root of 1140864556 is about 1044.9079399683.

The spelling of 1140864556 in words is "one billion, one hundred forty million, eight hundred sixty-four thousand, five hundred fifty-six".