119918981 has 16 divisors (see below), whose sum is σ = 149380224. Its totient is φ = 93731904.

The previous prime is 119918971. The next prime is 119918989. The reversal of 119918981 is 189819911.

It is not a de Polignac number, because 119918981 - 2¹⁸ = 119656837 is a prime.

It is a super-2 number, since 2×119918981² = 28761124008156722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119918989) 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 15 ways as a sum of consecutive naturals, for example, 386 + ... + 15491.

It is an arithmetic number, because the mean of its divisors is an integer number (9336264).

Almost surely, 2^119918981 is an apocalyptic number.

It is an amenable number.

119918981 is a deficient number, since it is larger than the sum of its proper divisors (29461243).

119918981 is a wasteful number, since it uses less digits than its factorization.

119918981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15980.

The product of its digits is 46656, while the sum is 47.

The square root of 119918981 is about 10950.7525312190. The cubic root of 119918981 is about 493.1313842990.

The spelling of 119918981 in words is "one hundred nineteen million, nine hundred eighteen thousand, nine hundred eighty-one".