157919619 has 16 divisors (see below), whose sum is σ = 247371264. Its totient is φ = 88346400.

The previous prime is 157919617. The next prime is 157919623. The reversal of 157919619 is 916919751.

It is a happy number.

It is not a de Polignac number, because 157919619 - 2¹ = 157919617 is a prime.

It is a super-2 number, since 2×157919619² = 49877212130210322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157919617) 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 in 15 ways as a sum of consecutive naturals, for example, 183627 + ... + 184484.

It is an arithmetic number, because the mean of its divisors is an integer number (15460704).

Almost surely, 2^157919619 is an apocalyptic number.

157919619 is a deficient number, since it is larger than the sum of its proper divisors (89451645).

157919619 is a wasteful number, since it uses less digits than its factorization.

157919619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368138.

The product of its digits is 153090, while the sum is 48.

The square root of 157919619 is about 12566.6072987103. The cubic root of 157919619 is about 540.5203249468.

The spelling of 157919619 in words is "one hundred fifty-seven million, nine hundred nineteen thousand, six hundred nineteen".