158188490 has 32 divisors (see below), whose sum is σ = 301691520. Its totient is φ = 59552064.

The previous prime is 158188477. The next prime is 158188493. The reversal of 158188490 is 94881851.

It is not an unprimeable number, because it can be changed into a prime (158188493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27179 + ... + 32481.

It is an arithmetic number, because the mean of its divisors is an integer number (9427860).

Almost surely, 2^158188490 is an apocalyptic number.

158188490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158188490 is a deficient number, since it is larger than the sum of its proper divisors (143503030).

158188490 is a wasteful number, since it uses less digits than its factorization.

158188490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486.

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 158188490 is about 12577.3005847837. The cubic root of 158188490 is about 540.8269109604.

The spelling of 158188490 in words is "one hundred fifty-eight million, one hundred eighty-eight thousand, four hundred ninety".