118481261 has 2 divisors, whose sum is σ = 118481262. Its totient is φ = 118481260.

The previous prime is 118481249. The next prime is 118481281. The reversal of 118481261 is 162184811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100120036 + 18361225 = 10006^2 + 4285^2 .

It is a cyclic number.

It is not a de Polignac number, because 118481261 - 2⁶ = 118481197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118481281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59240630 + 59240631.

It is an arithmetic number, because the mean of its divisors is an integer number (59240631).

Almost surely, 2^118481261 is an apocalyptic number.

It is an amenable number.

118481261 is a deficient number, since it is larger than the sum of its proper divisors (1).

118481261 is an equidigital number, since it uses as much as digits as its factorization.

118481261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 32.

The square root of 118481261 is about 10884.9097837327. The cubic root of 118481261 is about 491.1527227223.

The spelling of 118481261 in words is "one hundred eighteen million, four hundred eighty-one thousand, two hundred sixty-one".