158190564 has 72 divisors (see below), whose sum is σ = 429905728. Its totient is φ = 44349120.

The previous prime is 158190553. The next prime is 158190581. The reversal of 158190564 is 465091851.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292134 + ... + 292674.

Almost surely, 2^158190564 is an apocalyptic number.

158190564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158190564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214952864).

158190564 is an abundant number, since it is smaller than the sum of its proper divisors (271715164).

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

158190564 is a wasteful number, since it uses less digits than its factorization.

158190564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 158190564 is about 12577.3830346380. The cubic root of 158190564 is about 540.8292745334.

The spelling of 158190564 in words is "one hundred fifty-eight million, one hundred ninety thousand, five hundred sixty-four".