981196158 has 32 divisors (see below), whose sum is σ = 2019999744. Its totient is φ = 317574432.

The previous prime is 981196147. The next prime is 981196187. The reversal of 981196158 is 851691189.

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, 22116 + ... + 49512.

It is an arithmetic number, because the mean of its divisors is an integer number (63124992).

Almost surely, 2^981196158 is an apocalyptic number.

981196158 is an abundant number, since it is smaller than the sum of its proper divisors (1038803586).

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

981196158 is a wasteful number, since it uses less digits than its factorization.

981196158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27576.

The product of its digits is 155520, while the sum is 48.

The square root of 981196158 is about 31324.0507916840. The cubic root of 981196158 is about 993.6923498695.

The spelling of 981196158 in words is "nine hundred eighty-one million, one hundred ninety-six thousand, one hundred fifty-eight".