158489890 has 48 divisors (see below), whose sum is σ = 311164416. Its totient is φ = 58094400.

The previous prime is 158489869. The next prime is 158489893. The reversal of 158489890 is 98984851.

It is not an unprimeable number, because it can be changed into a prime (158489893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322545 + ... + 323035.

It is an arithmetic number, because the mean of its divisors is an integer number (6482592).

Almost surely, 2^158489890 is an apocalyptic number.

158489890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158489890 is a deficient number, since it is larger than the sum of its proper divisors (152674526).

158489890 is a wasteful number, since it uses less digits than its factorization.

158489890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 158489890 is about 12589.2767862177. The cubic root of 158489890 is about 541.1701761680.

The spelling of 158489890 in words is "one hundred fifty-eight million, four hundred eighty-nine thousand, eight hundred ninety".