12618091 has 2 divisors, whose sum is σ = 12618092. Its totient is φ = 12618090.

The previous prime is 12618083. The next prime is 12618113. The reversal of 12618091 is 19081621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12618091 - 2³ = 12618083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12618041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6309045 + 6309046.

It is an arithmetic number, because the mean of its divisors is an integer number (6309046).

Almost surely, 2^12618091 is an apocalyptic number.

12618091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12618091 is an equidigital number, since it uses as much as digits as its factorization.

12618091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12618091 is about 3552.1952367515. The cubic root of 12618091 is about 232.8079920242.

The spelling of 12618091 in words is "twelve million, six hundred eighteen thousand, ninety-one".