2918618909 has 2 divisors, whose sum is σ = 2918618910. Its totient is φ = 2918618908.

The previous prime is 2918618839. The next prime is 2918618921. The reversal of 2918618909 is 9098168192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2575258009 + 343360900 = 50747^2 + 18530^2 .

It is a cyclic number.

It is not a de Polignac number, because 2918618909 - 2²⁰ = 2917570333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2918618929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1459309454 + 1459309455.

It is an arithmetic number, because the mean of its divisors is an integer number (1459309455).

Almost surely, 2^2918618909 is an apocalyptic number.

It is an amenable number.

2918618909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2918618909 is an equidigital number, since it uses as much as digits as its factorization.

2918618909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 2918618909 is about 54024.2437152062. The cubic root of 2918618909 is about 1429.0885203263.

The spelling of 2918618909 in words is "two billion, nine hundred eighteen million, six hundred eighteen thousand, nine hundred nine".