149307538 has 16 divisors (see below), whose sum is σ = 227326176. Its totient is φ = 73537600.

The previous prime is 149307517. The next prime is 149307539. The reversal of 149307538 is 835703941.

It is a self number, because there is not a number n which added to its sum of digits gives 149307538.

It is not an unprimeable number, because it can be changed into a prime (149307539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65445 + ... + 67687.

It is an arithmetic number, because the mean of its divisors is an integer number (14207886).

Almost surely, 2^149307538 is an apocalyptic number.

149307538 is a deficient number, since it is larger than the sum of its proper divisors (78018638).

149307538 is a wasteful number, since it uses less digits than its factorization.

149307538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 149307538 is about 12219.1463695301. The cubic root of 149307538 is about 530.5104113452.

The spelling of 149307538 in words is "one hundred forty-nine million, three hundred seven thousand, five hundred thirty-eight".