190157609 has 2 divisors, whose sum is σ = 190157610. Its totient is φ = 190157608.

The previous prime is 190157581. The next prime is 190157651. The reversal of 190157609 is 906751091.

190157609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175165225 + 14992384 = 13235^2 + 3872^2 .

It is a cyclic number.

It is not a de Polignac number, because 190157609 - 2²⁴ = 173380393 is a prime.

It is not a weakly prime, because it can be changed into another prime (190159609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95078804 + 95078805.

It is an arithmetic number, because the mean of its divisors is an integer number (95078805).

Almost surely, 2^190157609 is an apocalyptic number.

It is an amenable number.

190157609 is a deficient number, since it is larger than the sum of its proper divisors (1).

190157609 is an equidigital number, since it uses as much as digits as its factorization.

190157609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 190157609 is about 13789.7646462875. The cubic root of 190157609 is about 575.0486249994.

The spelling of 190157609 in words is "one hundred ninety million, one hundred fifty-seven thousand, six hundred nine".