149138268 has 24 divisors (see below), whose sum is σ = 357395472. Its totient is φ = 48369024.

The previous prime is 149138261. The next prime is 149138273. The reversal of 149138268 is 862831941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149138261) 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, 167505 + ... + 168392.

It is an arithmetic number, because the mean of its divisors is an integer number (14891478).

Almost surely, 2^149138268 is an apocalyptic number.

It is an amenable number.

149138268 is an abundant number, since it is smaller than the sum of its proper divisors (208257204).

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

149138268 is a wasteful number, since it uses less digits than its factorization.

149138268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335941 (or 335939 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 149138268 is about 12212.2179803670. The cubic root of 149138268 is about 530.3098555993.

The spelling of 149138268 in words is "one hundred forty-nine million, one hundred thirty-eight thousand, two hundred sixty-eight".