137444819 has 2 divisors, whose sum is σ = 137444820. Its totient is φ = 137444818.

The previous prime is 137444719. The next prime is 137444863. The reversal of 137444819 is 918444731.

137444819 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 137444819 - 2⁸ = 137444563 is a prime.

It is a super-2 number, since 2×137444819² = 37782156539885522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (137444869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68722409 + 68722410.

It is an arithmetic number, because the mean of its divisors is an integer number (68722410).

Almost surely, 2^137444819 is an apocalyptic number.

137444819 is a deficient number, since it is larger than the sum of its proper divisors (1).

137444819 is an equidigital number, since it uses as much as digits as its factorization.

137444819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 137444819 is about 11723.6862376984. The cubic root of 137444819 is about 516.0710033394.

The spelling of 137444819 in words is "one hundred thirty-seven million, four hundred forty-four thousand, eight hundred nineteen".