118922861 has 2 divisors, whose sum is σ = 118922862. Its totient is φ = 118922860.

The previous prime is 118922849. The next prime is 118922879. The reversal of 118922861 is 168229811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106213636 + 12709225 = 10306^2 + 3565^2 .

It is an emirp because it is prime and its reverse (168229811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118922861 - 2²² = 114728557 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 (118922801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59461430 + 59461431.

It is an arithmetic number, because the mean of its divisors is an integer number (59461431).

Almost surely, 2^118922861 is an apocalyptic number.

It is an amenable number.

118922861 is a deficient number, since it is larger than the sum of its proper divisors (1).

118922861 is an equidigital number, since it uses as much as digits as its factorization.

118922861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 38.

The square root of 118922861 is about 10905.1758812043. The cubic root of 118922861 is about 491.7621696825.

The spelling of 118922861 in words is "one hundred eighteen million, nine hundred twenty-two thousand, eight hundred sixty-one".