1157644612 has 12 divisors (see below), whose sum is σ = 2034804240. Its totient is φ = 576271976.

The previous prime is 1157644583. The next prime is 1157644613. The reversal of 1157644612 is 2164467511.

It is not an unprimeable number, because it can be changed into a prime (1157644613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636562 + ... + 638377.

It is an arithmetic number, because the mean of its divisors is an integer number (169567020).

Almost surely, 2^1157644612 is an apocalyptic number.

It is an amenable number.

1157644612 is a deficient number, since it is larger than the sum of its proper divisors (877159628).

1157644612 is a wasteful number, since it uses less digits than its factorization.

1157644612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275170 (or 1275168 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 1157644612 is about 34024.1768746872. The cubic root of 1157644612 is about 1050.0059295206.

The spelling of 1157644612 in words is "one billion, one hundred fifty-seven million, six hundred forty-four thousand, six hundred twelve".