118371965 has 4 divisors (see below), whose sum is σ = 142046364. Its totient is φ = 94697568.

The previous prime is 118371947. The next prime is 118372013. The reversal of 118371965 is 569173811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569173811 = 2531 ⋅224881.

It can be written as a sum of positive squares in 2 ways, for example, as 12096484 + 106275481 = 3478^2 + 10309^2 .

It is a cyclic number.

It is not a de Polignac number, because 118371965 - 2¹² = 118367869 is a prime.

It is a super-2 number, since 2×118371965² = 28023844195922450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11837192 + ... + 11837201.

It is an arithmetic number, because the mean of its divisors is an integer number (35511591).

Almost surely, 2^118371965 is an apocalyptic number.

It is an amenable number.

118371965 is a deficient number, since it is larger than the sum of its proper divisors (23674399).

118371965 is an equidigital number, since it uses as much as digits as its factorization.

118371965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23674398.

The product of its digits is 45360, while the sum is 41.

The square root of 118371965 is about 10879.8880968510. Note that the first 3 decimals coincide. The cubic root of 118371965 is about 491.0016508919.

The spelling of 118371965 in words is "one hundred eighteen million, three hundred seventy-one thousand, nine hundred sixty-five".