2649860450 has 24 divisors (see below), whose sum is σ = 5061953172. Its totient is φ = 1031296320.

The previous prime is 2649860449. The next prime is 2649860489. The reversal of 2649860450 is 540689462.

It can be written as a sum of positive squares in 6 ways, for example, as 1216405129 + 1433455321 = 34877^2 + 37861^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714329 + ... + 718028.

Almost surely, 2^2649860450 is an apocalyptic number.

2649860450 is a deficient number, since it is larger than the sum of its proper divisors (2412092722).

2649860450 is a wasteful number, since it uses less digits than its factorization.

2649860450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432406 (or 1432401 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 2649860450 is about 51476.7952576693. The cubic root of 2649860450 is about 1383.8032122585.

The spelling of 2649860450 in words is "two billion, six hundred forty-nine million, eight hundred sixty thousand, four hundred fifty".