118975391 has 2 divisors, whose sum is σ = 118975392. Its totient is φ = 118975390.

The previous prime is 118975361. The next prime is 118975433. The reversal of 118975391 is 193579811.

It is a weak prime.

It is an emirp because it is prime and its reverse (193579811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118975391 - 2¹⁰ = 118974367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118975361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59487695 + 59487696.

It is an arithmetic number, because the mean of its divisors is an integer number (59487696).

Almost surely, 2^118975391 is an apocalyptic number.

118975391 is a deficient number, since it is larger than the sum of its proper divisors (1).

118975391 is an equidigital number, since it uses as much as digits as its factorization.

118975391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 44.

The square root of 118975391 is about 10907.5841046494. The cubic root of 118975391 is about 491.8345652505.

The spelling of 118975391 in words is "one hundred eighteen million, nine hundred seventy-five thousand, three hundred ninety-one".