2497389649 has 2 divisors, whose sum is σ = 2497389650. Its totient is φ = 2497389648.

The previous prime is 2497389617. The next prime is 2497389677. The reversal of 2497389649 is 9469837942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2074347025 + 423042624 = 45545^2 + 20568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2497389649 - 2⁵ = 2497389617 is a prime.

It is not a weakly prime, because it can be changed into another prime (2497389679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248694824 + 1248694825.

It is an arithmetic number, because the mean of its divisors is an integer number (1248694825).

Almost surely, 2^2497389649 is an apocalyptic number.

It is an amenable number.

2497389649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497389649 is an equidigital number, since it uses as much as digits as its factorization.

2497389649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 61.

The square root of 2497389649 is about 49973.8896725080. The cubic root of 2497389649 is about 1356.7362716117.

The spelling of 2497389649 in words is "two billion, four hundred ninety-seven million, three hundred eighty-nine thousand, six hundred forty-nine".