158990 has 16 divisors (see below), whose sum is σ = 308448. Its totient is φ = 58656.

The previous prime is 158981. The next prime is 158993. The reversal of 158990 is 99851.

158990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (19278).

2¹⁵⁸⁹⁹⁰ is an apocalyptic number.

158990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158990 is a deficient number, since it is larger than the sum of its proper divisors (149458).

158990 is a wasteful number, since it uses less digits than its factorization.

158990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 158990 is about 398.7355013038. The cubic root of 158990 is about 54.1738793814.

The spelling of 158990 in words is "one hundred fifty-eight thousand, nine hundred ninety".