149136539 has 2 divisors, whose sum is σ = 149136540. Its totient is φ = 149136538.

The previous prime is 149136527. The next prime is 149136583. The reversal of 149136539 is 935631941.

149136539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149136539 - 2²⁰ = 148087963 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149136496 and 149136505.

It is not a weakly prime, because it can be changed into another prime (149136739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74568269 + 74568270.

It is an arithmetic number, because the mean of its divisors is an integer number (74568270).

Almost surely, 2^149136539 is an apocalyptic number.

149136539 is a deficient number, since it is larger than the sum of its proper divisors (1).

149136539 is an equidigital number, since it uses as much as digits as its factorization.

149136539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 41.

The square root of 149136539 is about 12212.1471904002. The cubic root of 149136539 is about 530.3078062499.

The spelling of 149136539 in words is "one hundred forty-nine million, one hundred thirty-six thousand, five hundred thirty-nine".