118453681 has 2 divisors, whose sum is σ = 118453682. Its totient is φ = 118453680.

The previous prime is 118453667. The next prime is 118453693. The reversal of 118453681 is 186354811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102333456 + 16120225 = 10116^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 118453681 - 2⁵ = 118453649 is a prime.

It is a super-2 number, since 2×118453681² = 28062549084899522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 118453681.

It is not a weakly prime, because it can be changed into another prime (118453481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59226840 + 59226841.

It is an arithmetic number, because the mean of its divisors is an integer number (59226841).

Almost surely, 2^118453681 is an apocalyptic number.

It is an amenable number.

118453681 is a deficient number, since it is larger than the sum of its proper divisors (1).

118453681 is an equidigital number, since it uses as much as digits as its factorization.

118453681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 118453681 is about 10883.6428184685. The cubic root of 118453681 is about 491.1146096818.

The spelling of 118453681 in words is "one hundred eighteen million, four hundred fifty-three thousand, six hundred eighty-one".