1157238901 has 16 divisors (see below), whose sum is σ = 1425364864. Its totient is φ = 914929344.

The previous prime is 1157238893. The next prime is 1157238913. The reversal of 1157238901 is 1098327511.

It is not a de Polignac number, because 1157238901 - 2³ = 1157238893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157238931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141346 + ... + 149308.

It is an arithmetic number, because the mean of its divisors is an integer number (89085304).

Almost surely, 2^1157238901 is an apocalyptic number.

It is an amenable number.

1157238901 is a deficient number, since it is larger than the sum of its proper divisors (268125963).

1157238901 is a wasteful number, since it uses less digits than its factorization.

1157238901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9580.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1157238901 is about 34018.2142535436. The cubic root of 1157238901 is about 1049.8832526280.

The spelling of 1157238901 in words is "one billion, one hundred fifty-seven million, two hundred thirty-eight thousand, nine hundred one".