137478907 has 2 divisors, whose sum is σ = 137478908. Its totient is φ = 137478906.

The previous prime is 137478899. The next prime is 137478911. The reversal of 137478907 is 709874731.

137478907 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 137478907 - 2³ = 137478899 is a prime.

It is not a weakly prime, because it can be changed into another prime (137478917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68739453 + 68739454.

It is an arithmetic number, because the mean of its divisors is an integer number (68739454).

Almost surely, 2^137478907 is an apocalyptic number.

137478907 is a deficient number, since it is larger than the sum of its proper divisors (1).

137478907 is an equidigital number, since it uses as much as digits as its factorization.

137478907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 137478907 is about 11725.1399565208. The cubic root of 137478907 is about 516.1136637913.

The spelling of 137478907 in words is "one hundred thirty-seven million, four hundred seventy-eight thousand, nine hundred seven".