2649728464 has 10 divisors (see below), whose sum is σ = 5133848930. Its totient is φ = 1324864224.

The previous prime is 2649728453. The next prime is 2649728507. The reversal of 2649728464 is 4648279462.

It can be written as a sum of positive squares in only one way, i.e., 2261953600 + 387774864 = 47560^2 + 19692^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82803999 + ... + 82804030.

It is an arithmetic number, because the mean of its divisors is an integer number (513384893).

Almost surely, 2^2649728464 is an apocalyptic number.

It is an amenable number.

2649728464 is a deficient number, since it is larger than the sum of its proper divisors (2484120466).

2649728464 is a wasteful number, since it uses less digits than its factorization.

2649728464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165608037 (or 165608031 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The square root of 2649728464 is about 51475.5132465913. The cubic root of 2649728464 is about 1383.7802367489.

The spelling of 2649728464 in words is "two billion, six hundred forty-nine million, seven hundred twenty-eight thousand, four hundred sixty-four".