1157637671 has 2 divisors, whose sum is σ = 1157637672. Its totient is φ = 1157637670.

The previous prime is 1157637647. The next prime is 1157637697. The reversal of 1157637671 is 1767367511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1157637671 - 2²² = 1153443367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157633671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578818835 + 578818836.

It is an arithmetic number, because the mean of its divisors is an integer number (578818836).

Almost surely, 2^1157637671 is an apocalyptic number.

1157637671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157637671 is an equidigital number, since it uses as much as digits as its factorization.

1157637671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185220, while the sum is 44.

The square root of 1157637671 is about 34024.0748735362. The cubic root of 1157637671 is about 1050.0038309762.

The spelling of 1157637671 in words is "one billion, one hundred fifty-seven million, six hundred thirty-seven thousand, six hundred seventy-one".