137979619 has 2 divisors, whose sum is σ = 137979620. Its totient is φ = 137979618.

The previous prime is 137979559. The next prime is 137979643. The reversal of 137979619 is 916979731.

137979619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137979619 - 2²⁵ = 104425187 is a prime.

It is a super-2 number, since 2×137979619² = 38076750518770322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137979649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68989809 + 68989810.

It is an arithmetic number, because the mean of its divisors is an integer number (68989810).

Almost surely, 2^137979619 is an apocalyptic number.

137979619 is a deficient number, since it is larger than the sum of its proper divisors (1).

137979619 is an equidigital number, since it uses as much as digits as its factorization.

137979619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 52.

The square root of 137979619 is about 11746.4726194718. The cubic root of 137979619 is about 516.7394839212.

The spelling of 137979619 in words is "one hundred thirty-seven million, nine hundred seventy-nine thousand, six hundred nineteen".