981220674018 has 32 divisors (see below), whose sum is σ = 2115468476352. Its totient is φ = 301618324800.

The previous prime is 981220673981. The next prime is 981220674023. The reversal of 981220674018 is 810476022189.

It is a happy number.

It is a super-2 number, since 2×981220674018² (a number of 25 digits) contains 22 as substring.

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, 6080868 + ... + 6240143.

It is an arithmetic number, because the mean of its divisors is an integer number (66108389886).

Almost surely, 2^981220674018 is an apocalyptic number.

981220674018 is an abundant number, since it is smaller than the sum of its proper divisors (1134247802334).

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

981220674018 is a wasteful number, since it uses less digits than its factorization.

981220674018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12322050.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 981220674018 in words is "nine hundred eighty-one billion, two hundred twenty million, six hundred seventy-four thousand, eighteen".