149937638 has 8 divisors (see below), whose sum is σ = 232161600. Its totient is φ = 72550440.

The previous prime is 149937617. The next prime is 149937643. The reversal of 149937638 is 836739941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209113 + ... + 1209236.

It is an arithmetic number, because the mean of its divisors is an integer number (29020200).

Almost surely, 2^149937638 is an apocalyptic number.

149937638 is a deficient number, since it is larger than the sum of its proper divisors (82223962).

149937638 is a wasteful number, since it uses less digits than its factorization.

149937638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418382.

The product of its digits is 979776, while the sum is 50.

The square root of 149937638 is about 12244.9025312576. The cubic root of 149937638 is about 531.2556415918.

The spelling of 149937638 in words is "one hundred forty-nine million, nine hundred thirty-seven thousand, six hundred thirty-eight".