149621644 has 12 divisors (see below), whose sum is σ = 261975168. Its totient is φ = 74771600.

The previous prime is 149621629. The next prime is 149621671. The reversal of 149621644 is 446126941.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172 + ... + 17299.

It is an arithmetic number, because the mean of its divisors is an integer number (21831264).

Almost surely, 2^149621644 is an apocalyptic number.

It is an amenable number.

149621644 is a deficient number, since it is larger than the sum of its proper divisors (112353524).

149621644 is a wasteful number, since it uses less digits than its factorization.

149621644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19616 (or 19614 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 149621644 is about 12231.9926422476. The cubic root of 149621644 is about 530.8821715121.

The spelling of 149621644 in words is "one hundred forty-nine million, six hundred twenty-one thousand, six hundred forty-four".