2618732549 has 2 divisors, whose sum is σ = 2618732550. Its totient is φ = 2618732548.

The previous prime is 2618732531. The next prime is 2618732561. The reversal of 2618732549 is 9452378162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2477550625 + 141181924 = 49775^2 + 11882^2 .

It is a cyclic number.

It is not a de Polignac number, because 2618732549 - 2¹⁶ = 2618667013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2618732569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309366274 + 1309366275.

It is an arithmetic number, because the mean of its divisors is an integer number (1309366275).

Almost surely, 2^2618732549 is an apocalyptic number.

It is an amenable number.

2618732549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2618732549 is an equidigital number, since it uses as much as digits as its factorization.

2618732549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 2618732549 is about 51173.5532184350. The cubic root of 2618732549 is about 1378.3633452039.

The spelling of 2618732549 in words is "two billion, six hundred eighteen million, seven hundred thirty-two thousand, five hundred forty-nine".