190299457 has 2 divisors, whose sum is σ = 190299458. Its totient is φ = 190299456.

The previous prime is 190299451. The next prime is 190299511. The reversal of 190299457 is 754992091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181063936 + 9235521 = 13456^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 190299457 - 2³ = 190299449 is a prime.

It is not a weakly prime, because it can be changed into another prime (190299451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95149728 + 95149729.

It is an arithmetic number, because the mean of its divisors is an integer number (95149729).

Almost surely, 2^190299457 is an apocalyptic number.

It is an amenable number.

190299457 is a deficient number, since it is larger than the sum of its proper divisors (1).

190299457 is an equidigital number, since it uses as much as digits as its factorization.

190299457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 190299457 is about 13794.9069224841. The cubic root of 190299457 is about 575.1915752324.

The spelling of 190299457 in words is "one hundred ninety million, two hundred ninety-nine thousand, four hundred fifty-seven".