2318409949 has 2 divisors, whose sum is σ = 2318409950. Its totient is φ = 2318409948.

The previous prime is 2318409941. The next prime is 2318409967. The reversal of 2318409949 is 9499048132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1466353849 + 852056100 = 38293^2 + 29190^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318409949 - 2³ = 2318409941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2318409941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159204974 + 1159204975.

It is an arithmetic number, because the mean of its divisors is an integer number (1159204975).

Almost surely, 2^2318409949 is an apocalyptic number.

It is an amenable number.

2318409949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2318409949 is an equidigital number, since it uses as much as digits as its factorization.

2318409949 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 49.

The square root of 2318409949 is about 48149.8696675287. The cubic root of 2318409949 is about 1323.5186861174.

The spelling of 2318409949 in words is "two billion, three hundred eighteen million, four hundred nine thousand, nine hundred forty-nine".