1140455656 has 16 divisors (see below), whose sum is σ = 2143188000. Its totient is φ = 568938864.

The previous prime is 1140455651. The next prime is 1140455681. The reversal of 1140455656 is 6565540411.

It is not an unprimeable number, because it can be changed into a prime (1140455651) 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, 157356 + ... + 164443.

It is an arithmetic number, because the mean of its divisors is an integer number (133949250).

Almost surely, 2^1140455656 is an apocalyptic number.

It is an amenable number.

1140455656 is a deficient number, since it is larger than the sum of its proper divisors (1002732344).

1140455656 is a wasteful number, since it uses less digits than its factorization.

1140455656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322248 (or 322244 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1140455656 is about 33770.6330411498. The cubic root of 1140455656 is about 1044.7830890646.

The spelling of 1140455656 in words is "one billion, one hundred forty million, four hundred fifty-five thousand, six hundred fifty-six".