149918868 has 36 divisors (see below), whose sum is σ = 413413728. Its totient is φ = 45429840.

The previous prime is 149918863. The next prime is 149918887. The reversal of 149918868 is 868819941.

149918868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149918863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188896 + ... + 189687.

Almost surely, 2^149918868 is an apocalyptic number.

149918868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

149918868 is an abundant number, since it is smaller than the sum of its proper divisors (263494860).

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

149918868 is a wasteful number, since it uses less digits than its factorization.

149918868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378604 (or 378599 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 149918868 is about 12244.1360658888. The cubic root of 149918868 is about 531.2334721871.

The spelling of 149918868 in words is "one hundred forty-nine million, nine hundred eighteen thousand, eight hundred sixty-eight".