1157049057 has 4 divisors (see below), whose sum is σ = 1542732080. Its totient is φ = 771366036.

The previous prime is 1157049043. The next prime is 1157049067. The reversal of 1157049057 is 7509407511.

1157049057 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1157049057 - 2⁴ = 1157049041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157049067) 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, 192841507 + ... + 192841512.

It is an arithmetic number, because the mean of its divisors is an integer number (385683020).

Almost surely, 2^1157049057 is an apocalyptic number.

It is an amenable number.

1157049057 is a deficient number, since it is larger than the sum of its proper divisors (385683023).

1157049057 is an equidigital number, since it uses as much as digits as its factorization.

1157049057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385683022.

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 1157049057 is about 34015.4238103834. The cubic root of 1157049057 is about 1049.8258386875.

The spelling of 1157049057 in words is "one billion, one hundred fifty-seven million, forty-nine thousand, fifty-seven".