116941981 has 16 divisors (see below), whose sum is σ = 127934464. Its totient is φ = 106251264.

The previous prime is 116941973. The next prime is 116941987. The reversal of 116941981 is 189149611.

It is a cyclic number.

It is not a de Polignac number, because 116941981 - 2³ = 116941973 is a prime.

It is a super-2 number, since 2×116941981² = 27350853840408722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116941987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318460 + ... + 318826.

It is an arithmetic number, because the mean of its divisors is an integer number (7995904).

Almost surely, 2^116941981 is an apocalyptic number.

It is an amenable number.

116941981 is a deficient number, since it is larger than the sum of its proper divisors (10992483).

116941981 is a wasteful number, since it uses less digits than its factorization.

116941981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 15552, while the sum is 40.

The square root of 116941981 is about 10813.9715646010. The cubic root of 116941981 is about 489.0164653074.

The spelling of 116941981 in words is "one hundred sixteen million, nine hundred forty-one thousand, nine hundred eighty-one".