149993868 has 24 divisors (see below), whose sum is σ = 350477568. Its totient is φ = 49927696.

The previous prime is 149993849. The next prime is 149993891. The reversal of 149993868 is 868399941.

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 7 ways as a sum of consecutive naturals, for example, 505 + ... + 17327.

It is an arithmetic number, because the mean of its divisors is an integer number (14603232).

Almost surely, 2^149993868 is an apocalyptic number.

It is an amenable number.

149993868 is an abundant number, since it is smaller than the sum of its proper divisors (200483700).

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

149993868 is a wasteful number, since it uses less digits than its factorization.

149993868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17573 (or 17571 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 57.

The square root of 149993868 is about 12247.1983735057. The cubic root of 149993868 is about 531.3220442456.

The spelling of 149993868 in words is "one hundred forty-nine million, nine hundred ninety-three thousand, eight hundred sixty-eight".