190654557631 has 2 divisors, whose sum is σ = 190654557632. Its totient is φ = 190654557630.

The previous prime is 190654557563. The next prime is 190654557703. The reversal of 190654557631 is 136755456091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190654557631 - 2⁷ = 190654557503 is a prime.

It is a super-2 number, since 2×190654557631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190654558631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95327278815 + 95327278816.

It is an arithmetic number, because the mean of its divisors is an integer number (95327278816).

Almost surely, 2^190654557631 is an apocalyptic number.

190654557631 is a deficient number, since it is larger than the sum of its proper divisors (1).

190654557631 is an equidigital number, since it uses as much as digits as its factorization.

190654557631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 190654557631 in words is "one hundred ninety billion, six hundred fifty-four million, five hundred fifty-seven thousand, six hundred thirty-one".