118296391 has 2 divisors, whose sum is σ = 118296392. Its totient is φ = 118296390.

The previous prime is 118296389. The next prime is 118296461. The reversal of 118296391 is 193692811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118296391 - 2¹ = 118296389 is a prime.

It is a super-2 number, since 2×118296391² = 27988072247249762, which contains 22 as substring.

Together with 118296389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118296361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59148195 + 59148196.

It is an arithmetic number, because the mean of its divisors is an integer number (59148196).

Almost surely, 2^118296391 is an apocalyptic number.

118296391 is a deficient number, since it is larger than the sum of its proper divisors (1).

118296391 is an equidigital number, since it uses as much as digits as its factorization.

118296391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 118296391 is about 10876.4144367526. The cubic root of 118296391 is about 490.8971361151.

The spelling of 118296391 in words is "one hundred eighteen million, two hundred ninety-six thousand, three hundred ninety-one".