158499864 has 24 divisors (see below), whose sum is σ = 429270660. Its totient is φ = 52833264.

The previous prime is 158499851. The next prime is 158499889. The reversal of 158499864 is 468994851.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 158499864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100622 + ... + 1100765.

Almost surely, 2^158499864 is an apocalyptic number.

It is an amenable number.

158499864 is an abundant number, since it is smaller than the sum of its proper divisors (270770796).

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

158499864 is a wasteful number, since it uses less digits than its factorization.

158499864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201399 (or 2201392 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 158499864 is about 12589.6729107630. The cubic root of 158499864 is about 541.1815281395.

The spelling of 158499864 in words is "one hundred fifty-eight million, four hundred ninety-nine thousand, eight hundred sixty-four".