107916381 has 20 divisors (see below), whose sum is σ = 163858684. Its totient is φ = 70761600.

The previous prime is 107916373. The next prime is 107916397. The reversal of 107916381 is 183619701.

107916381 is a `hidden beast` number, since 10 + 7 + 9 + 1 + 638 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 980100 + 106936281 = 990^2 + 10341^2 .

It is not a de Polignac number, because 107916381 - 2³ = 107916373 is a prime.

It is a super-2 number, since 2×107916381² = 23291890576274322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107916311) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5980 + ... + 15861.

Almost surely, 2^107916381 is an apocalyptic number.

It is an amenable number.

107916381 is a deficient number, since it is larger than the sum of its proper divisors (55942303).

107916381 is an equidigital number, since it uses as much as digits as its factorization.

107916381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21914 (or 21905 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 107916381 is about 10388.2809453730. The cubic root of 107916381 is about 476.0973793308.

The spelling of 107916381 in words is "one hundred seven million, nine hundred sixteen thousand, three hundred eighty-one".