158491830 has 32 divisors (see below), whose sum is σ = 434721024. Its totient is φ = 36226656.

The previous prime is 158491811. The next prime is 158491843. The reversal of 158491830 is 38194851.

158491830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377152 + ... + 377571.

It is an arithmetic number, because the mean of its divisors is an integer number (13585032).

Almost surely, 2^158491830 is an apocalyptic number.

158491830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158491830 is an abundant number, since it is smaller than the sum of its proper divisors (276229194).

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

158491830 is a wasteful number, since it uses less digits than its factorization.

158491830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754740.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 158491830 is about 12589.3538356820. The cubic root of 158491830 is about 541.1723842287.

The spelling of 158491830 in words is "one hundred fifty-eight million, four hundred ninety-one thousand, eight hundred thirty".