158899968 has 180 divisors, whose sum is σ = 484755040. Its totient is φ = 51757056.

The previous prime is 158899963. The next prime is 158899973. The reversal of 158899968 is 869998851.

It is an interprime number because it is at equal distance from previous prime (158899963) and next prime (158899973).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158899963) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1638096 + ... + 1638192.

Almost surely, 2^158899968 is an apocalyptic number.

158899968 is a gapful number since it is divisible by the number (18) 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 158899968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242377520).

158899968 is an abundant number, since it is smaller than the sum of its proper divisors (325855072).

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

158899968 is an frugal number, since it uses more digits than its factorization.

158899968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 181 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 158899968 is about 12605.5530620437. The cubic root of 158899968 is about 541.6365168649.

The spelling of 158899968 in words is "one hundred fifty-eight million, eight hundred ninety-nine thousand, nine hundred sixty-eight".