1156755864 has 64 divisors (see below), whose sum is σ = 3240080640. Its totient is φ = 341055360.

The previous prime is 1156755863. The next prime is 1156755911. The reversal of 1156755864 is 4685576511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156755863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49444 + ... + 68979.

It is an arithmetic number, because the mean of its divisors is an integer number (50626260).

Almost surely, 2^1156755864 is an apocalyptic number.

It is an amenable number.

1156755864 is an abundant number, since it is smaller than the sum of its proper divisors (2083324776).

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

1156755864 is a wasteful number, since it uses less digits than its factorization.

1156755864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118480 (or 118476 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The square root of 1156755864 is about 34011.1138306290. The cubic root of 1156755864 is about 1049.7371568846.

The spelling of 1156755864 in words is "one billion, one hundred fifty-six million, seven hundred fifty-five thousand, eight hundred sixty-four".