118188893 has 2 divisors, whose sum is σ = 118188894. Its totient is φ = 118188892.

The previous prime is 118188877. The next prime is 118188899. The reversal of 118188893 is 398881811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86806489 + 31382404 = 9317^2 + 5602^2 .

It is a cyclic number.

It is not a de Polignac number, because 118188893 - 2⁴ = 118188877 is a prime.

It is a super-2 number, since 2×118188893² = 27937228857130898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118188899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59094446 + 59094447.

It is an arithmetic number, because the mean of its divisors is an integer number (59094447).

Almost surely, 2^118188893 is an apocalyptic number.

It is an amenable number.

118188893 is a deficient number, since it is larger than the sum of its proper divisors (1).

118188893 is an equidigital number, since it uses as much as digits as its factorization.

118188893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 47.

The square root of 118188893 is about 10871.4715195322. The cubic root of 118188893 is about 490.7483954465.

The spelling of 118188893 in words is "one hundred eighteen million, one hundred eighty-eight thousand, eight hundred ninety-three".