158640982 has 32 divisors (see below), whose sum is σ = 253435392. Its totient is φ = 74325504.

The previous prime is 158640973. The next prime is 158640997. The reversal of 158640982 is 289046851.

It is a happy number.

It is a super-2 number, since 2×158640982² = 50333922339848648, which contains 22 as substring.

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, 821878 + ... + 822070.

It is an arithmetic number, because the mean of its divisors is an integer number (7919856).

Almost surely, 2^158640982 is an apocalyptic number.

158640982 is a deficient number, since it is larger than the sum of its proper divisors (94794410).

158640982 is a wasteful number, since it uses less digits than its factorization.

158640982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 158640982 is about 12595.2761779963. The cubic root of 158640982 is about 541.3420914760.

The spelling of 158640982 in words is "one hundred fifty-eight million, six hundred forty thousand, nine hundred eighty-two".