149535644 has 24 divisors (see below), whose sum is σ = 267951600. Its totient is φ = 72996480.

The previous prime is 149535613. The next prime is 149535671. The reversal of 149535644 is 446535941.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31712 + ... + 36120.

It is an arithmetic number, because the mean of its divisors is an integer number (11164650).

Almost surely, 2^149535644 is an apocalyptic number.

It is an amenable number.

149535644 is a deficient number, since it is larger than the sum of its proper divisors (118415956).

149535644 is a wasteful number, since it uses less digits than its factorization.

149535644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613 (or 4611 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 149535644 is about 12228.4767653212. The cubic root of 149535644 is about 530.7804379755.

The spelling of 149535644 in words is "one hundred forty-nine million, five hundred thirty-five thousand, six hundred forty-four".