1157237697 has 32 divisors (see below), whose sum is σ = 1928070144. Its totient is φ = 599803200.

The previous prime is 1157237681. The next prime is 1157237701. The reversal of 1157237697 is 7967327511.

It is not a de Polignac number, because 1157237697 - 2⁴ = 1157237681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157237597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101058 + ... + 111924.

It is an arithmetic number, because the mean of its divisors is an integer number (60252192).

Almost surely, 2^1157237697 is an apocalyptic number.

It is an amenable number.

1157237697 is a deficient number, since it is larger than the sum of its proper divisors (770832447).

1157237697 is a wasteful number, since it uses less digits than its factorization.

1157237697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11349.

The product of its digits is 555660, while the sum is 48.

The square root of 1157237697 is about 34018.1965571369. The cubic root of 1157237697 is about 1049.8828885258.

The spelling of 1157237697 in words is "one billion, one hundred fifty-seven million, two hundred thirty-seven thousand, six hundred ninety-seven".