2458521649 has 2 divisors, whose sum is σ = 2458521650. Its totient is φ = 2458521648.

The previous prime is 2458521617. The next prime is 2458521673. The reversal of 2458521649 is 9461258542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2098281249 + 360240400 = 45807^2 + 18980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2458521649 - 2⁵ = 2458521617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2458521599 and 2458521608.

It is not a weakly prime, because it can be changed into another prime (2458521679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1229260824 + 1229260825.

It is an arithmetic number, because the mean of its divisors is an integer number (1229260825).

Almost surely, 2^2458521649 is an apocalyptic number.

It is an amenable number.

2458521649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2458521649 is an equidigital number, since it uses as much as digits as its factorization.

2458521649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 46.

The square root of 2458521649 is about 49583.4816143441. The cubic root of 2458521649 is about 1349.6609389010.

The spelling of 2458521649 in words is "two billion, four hundred fifty-eight million, five hundred twenty-one thousand, six hundred forty-nine".