1157690057 has 8 divisors (see below), whose sum is σ = 1161592800. Its totient is φ = 1153795104.

The previous prime is 1157690033. The next prime is 1157690081. The reversal of 1157690057 is 7500967511.

It is an interprime number because it is at equal distance from previous prime (1157690033) and next prime (1157690081).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157690057 - 2⁸ = 1157689801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157689996 and 1157690023.

It is not an unprimeable number, because it can be changed into a prime (1157690087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454694 + ... + 457232.

It is an arithmetic number, because the mean of its divisors is an integer number (145199100).

Almost surely, 2^1157690057 is an apocalyptic number.

It is an amenable number.

1157690057 is a deficient number, since it is larger than the sum of its proper divisors (3902743).

1157690057 is an equidigital number, since it uses as much as digits as its factorization.

1157690057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895.

The product of its (nonzero) digits is 66150, while the sum is 41.

The square root of 1157690057 is about 34024.8447020703. The cubic root of 1157690057 is about 1050.0196691705.

The spelling of 1157690057 in words is "one billion, one hundred fifty-seven million, six hundred ninety thousand, fifty-seven".