190257631 has 2 divisors, whose sum is σ = 190257632. Its totient is φ = 190257630.

The previous prime is 190257611. The next prime is 190257649. The reversal of 190257631 is 136752091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190257631 - 2²⁵ = 156703199 is a prime.

It is a super-2 number, since 2×190257631² = 72395932307464322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190257611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95128815 + 95128816.

It is an arithmetic number, because the mean of its divisors is an integer number (95128816).

Almost surely, 2^190257631 is an apocalyptic number.

190257631 is a deficient number, since it is larger than the sum of its proper divisors (1).

190257631 is an equidigital number, since it uses as much as digits as its factorization.

190257631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 190257631 is about 13793.3908448938. The cubic root of 190257631 is about 575.1494316096.

The spelling of 190257631 in words is "one hundred ninety million, two hundred fifty-seven thousand, six hundred thirty-one".