1157251136 has 28 divisors (see below), whose sum is σ = 2297501628. Its totient is φ = 578353152.

The previous prime is 1157251133. The next prime is 1157251153. The reversal of 1157251136 is 6311527511.

It can be written as a sum of positive squares in 2 ways, for example, as 705433600 + 451817536 = 26560^2 + 21256^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1157251133) 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, 257420 + ... + 261876.

Almost surely, 2^1157251136 is an apocalyptic number.

1157251136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1157251136 is a deficient number, since it is larger than the sum of its proper divisors (1140250492).

1157251136 is an equidigital number, since it uses as much as digits as its factorization.

1157251136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526 (or 8516 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 1157251136 is about 34018.3940832015. The cubic root of 1157251136 is about 1049.8869526063.

Adding to 1157251136 its reverse (6311527511), we get a palindrome (7468778647).

The spelling of 1157251136 in words is "one billion, one hundred fifty-seven million, two hundred fifty-one thousand, one hundred thirty-six".