2518418549 has 2 divisors, whose sum is σ = 2518418550. Its totient is φ = 2518418548.

The previous prime is 2518418533. The next prime is 2518418621. The reversal of 2518418549 is 9458148152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2090135524 + 428283025 = 45718^2 + 20695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2518418549 - 2⁴ = 2518418533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2518418519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259209274 + 1259209275.

It is an arithmetic number, because the mean of its divisors is an integer number (1259209275).

Almost surely, 2^2518418549 is an apocalyptic number.

It is an amenable number.

2518418549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2518418549 is an equidigital number, since it uses as much as digits as its factorization.

2518418549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 47.

The square root of 2518418549 is about 50183.8474910005. The cubic root of 2518418549 is about 1360.5336985879.

The spelling of 2518418549 in words is "two billion, five hundred eighteen million, four hundred eighteen thousand, five hundred forty-nine".