190538857 has 2 divisors, whose sum is σ = 190538858. Its totient is φ = 190538856.

The previous prime is 190538809. The next prime is 190538861. The reversal of 190538857 is 758835091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120582361 + 69956496 = 10981^2 + 8364^2 .

It is a cyclic number.

It is not a de Polignac number, because 190538857 - 2¹⁵ = 190506089 is a prime.

It is not a weakly prime, because it can be changed into another prime (190518857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95269428 + 95269429.

It is an arithmetic number, because the mean of its divisors is an integer number (95269429).

Almost surely, 2^190538857 is an apocalyptic number.

It is an amenable number.

190538857 is a deficient number, since it is larger than the sum of its proper divisors (1).

190538857 is an equidigital number, since it uses as much as digits as its factorization.

190538857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 190538857 is about 13803.5813106599. The cubic root of 190538857 is about 575.4326744666.

The spelling of 190538857 in words is "one hundred ninety million, five hundred thirty-eight thousand, eight hundred fifty-seven".