158909816 has 16 divisors (see below), whose sum is σ = 320875800. Its totient is φ = 73342944.

The previous prime is 158909771. The next prime is 158909827. The reversal of 158909816 is 618909851.

158909816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763886 + ... + 764093.

Almost surely, 2^158909816 is an apocalyptic number.

It is an amenable number.

158909816 is an abundant number, since it is smaller than the sum of its proper divisors (161965984).

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

158909816 is a wasteful number, since it uses less digits than its factorization.

158909816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527998 (or 1527994 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 158909816 is about 12605.9436774880. The cubic root of 158909816 is about 541.6477061397.

The spelling of 158909816 in words is "one hundred fifty-eight million, nine hundred nine thousand, eight hundred sixteen".