137638099 has 2 divisors, whose sum is σ = 137638100. Its totient is φ = 137638098.

The previous prime is 137638097. The next prime is 137638117. The reversal of 137638099 is 990836731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137638099 - 2¹ = 137638097 is a prime.

Together with 137638097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137638093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68819049 + 68819050.

It is an arithmetic number, because the mean of its divisors is an integer number (68819050).

Almost surely, 2^137638099 is an apocalyptic number.

137638099 is a deficient number, since it is larger than the sum of its proper divisors (1).

137638099 is an equidigital number, since it uses as much as digits as its factorization.

137638099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 137638099 is about 11731.9264828927. The cubic root of 137638099 is about 516.3127960946.

The spelling of 137638099 in words is "one hundred thirty-seven million, six hundred thirty-eight thousand, ninety-nine".