149253738 has 16 divisors (see below), whose sum is σ = 299264160. Its totient is φ = 49625136.

The previous prime is 149253733. The next prime is 149253757. The reversal of 149253738 is 837352941.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149253738.

It is not an unprimeable number, because it can be changed into a prime (149253733) 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, 28948 + ... + 33711.

It is an arithmetic number, because the mean of its divisors is an integer number (18704010).

Almost surely, 2^149253738 is an apocalyptic number.

149253738 is an abundant number, since it is smaller than the sum of its proper divisors (150010422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149253738 is a wasteful number, since it uses less digits than its factorization.

149253738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63061.

The product of its digits is 181440, while the sum is 42.

The square root of 149253738 is about 12216.9447080684. The cubic root of 149253738 is about 530.4466840673.

The spelling of 149253738 in words is "one hundred forty-nine million, two hundred fifty-three thousand, seven hundred thirty-eight".