1157812564 has 24 divisors (see below), whose sum is σ = 2051817768. Its totient is φ = 571607040.

The previous prime is 1157812561. The next prime is 1157812603. The reversal of 1157812564 is 4652187511.

It can be written as a sum of positive squares in 4 ways, for example, as 12531600 + 1145280964 = 3540^2 + 33842^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157812561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175632 + ... + 182104.

It is an arithmetic number, because the mean of its divisors is an integer number (85492407).

Almost surely, 2^1157812564 is an apocalyptic number.

It is an amenable number.

1157812564 is a deficient number, since it is larger than the sum of its proper divisors (894005204).

1157812564 is a wasteful number, since it uses less digits than its factorization.

1157812564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7035 (or 7033 counting only the distinct ones).

The product of its digits is 67200, while the sum is 40.

The square root of 1157812564 is about 34026.6449124800. The cubic root of 1157812564 is about 1050.0567056299.

It can be divided in two parts, 11578 and 12564, that added together give a palindrome (24142).

The spelling of 1157812564 in words is "one billion, one hundred fifty-seven million, eight hundred twelve thousand, five hundred sixty-four".