149945916 has 36 divisors (see below), whose sum is σ = 371673848. Its totient is φ = 47040768.

The previous prime is 149945893. The next prime is 149945923. The reversal of 149945916 is 619549941.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 18151 + ... + 25086.

Almost surely, 2^149945916 is an apocalyptic number.

It is an amenable number.

149945916 is an abundant number, since it is smaller than the sum of its proper divisors (221727932).

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

149945916 is a wasteful number, since it uses less digits than its factorization.

149945916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43278 (or 43259 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 149945916 is about 12245.2405447994. The cubic root of 149945916 is about 531.2654182192.

It can be divided in two parts, 14994 and 5916, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 149945916 in words is "one hundred forty-nine million, nine hundred forty-five thousand, nine hundred sixteen".