118409189231 has 2 divisors, whose sum is σ = 118409189232. Its totient is φ = 118409189230.

The previous prime is 118409189179. The next prime is 118409189257. The reversal of 118409189231 is 132981904811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118409189231 - 2⁶ = 118409189167 is a prime.

It is a super-2 number, since 2×118409189231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118409189831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59204594615 + 59204594616.

It is an arithmetic number, because the mean of its divisors is an integer number (59204594616).

Almost surely, 2^118409189231 is an apocalyptic number.

118409189231 is a deficient number, since it is larger than the sum of its proper divisors (1).

118409189231 is an equidigital number, since it uses as much as digits as its factorization.

118409189231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 47.

The spelling of 118409189231 in words is "one hundred eighteen billion, four hundred nine million, one hundred eighty-nine thousand, two hundred thirty-one".