1156864412738 has 4 divisors (see below), whose sum is σ = 1735296619110. Its totient is φ = 578432206368.

The previous prime is 1156864412723. The next prime is 1156864412761. The reversal of 1156864412738 is 8372144686511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1026750544369 + 130113868369 = 1013287^2 + 360713^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289216103183 + ... + 289216103186.

Almost surely, 2^{1156864412738} is an apocalyptic number.

1156864412738 is a deficient number, since it is larger than the sum of its proper divisors (578432206372).

1156864412738 is an equidigital number, since it uses as much as digits as its factorization.

1156864412738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578432206371.

The product of its digits is 7741440, while the sum is 56.

The spelling of 1156864412738 in words is "one trillion, one hundred fifty-six billion, eight hundred sixty-four million, four hundred twelve thousand, seven hundred thirty-eight".