157389619 has 2 divisors, whose sum is σ = 157389620. Its totient is φ = 157389618.

The previous prime is 157389607. The next prime is 157389623. The reversal of 157389619 is 916983751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157389619 - 2⁹ = 157389107 is a prime.

It is a super-2 number, since 2×157389619² = 49542984337930322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157389649) 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, 78694809 + 78694810.

It is an arithmetic number, because the mean of its divisors is an integer number (78694810).

Almost surely, 2^157389619 is an apocalyptic number.

157389619 is a deficient number, since it is larger than the sum of its proper divisors (1).

157389619 is an equidigital number, since it uses as much as digits as its factorization.

157389619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 157389619 is about 12545.5019429276. The cubic root of 157389619 is about 539.9149603169.

The spelling of 157389619 in words is "one hundred fifty-seven million, three hundred eighty-nine thousand, six hundred nineteen".