118131966 has 16 divisors (see below), whose sum is σ = 262515600. Its totient is φ = 39377304.

The previous prime is 118131961. The next prime is 118131977. The reversal of 118131966 is 669131811.

It is a happy number.

It is a super-2 number, since 2×118131966² = 27910322782050312, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118131966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118131961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093761 + ... + 1093868.

It is an arithmetic number, because the mean of its divisors is an integer number (16407225).

Almost surely, 2^118131966 is an apocalyptic number.

118131966 is an abundant number, since it is smaller than the sum of its proper divisors (144383634).

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

118131966 is a wasteful number, since it uses less digits than its factorization.

118131966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187640 (or 2187634 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 118131966 is about 10868.8530213634. The cubic root of 118131966 is about 490.6695913114.

The spelling of 118131966 in words is "one hundred eighteen million, one hundred thirty-one thousand, nine hundred sixty-six".