190370857 has 2 divisors, whose sum is σ = 190370858. Its totient is φ = 190370856.

The previous prime is 190370849. The next prime is 190370923. The reversal of 190370857 is 758073091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178783641 + 11587216 = 13371^2 + 3404^2 .

It is a cyclic number.

It is not a de Polignac number, because 190370857 - 2³ = 190370849 is a prime.

It is not a weakly prime, because it can be changed into another prime (190370827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95185428 + 95185429.

It is an arithmetic number, because the mean of its divisors is an integer number (95185429).

Almost surely, 2^190370857 is an apocalyptic number.

It is an amenable number.

190370857 is a deficient number, since it is larger than the sum of its proper divisors (1).

190370857 is an equidigital number, since it uses as much as digits as its factorization.

190370857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 190370857 is about 13797.4945914104. The cubic root of 190370857 is about 575.2635031715.

The spelling of 190370857 in words is "one hundred ninety million, three hundred seventy thousand, eight hundred fifty-seven".