1649617464 has 32 divisors (see below), whose sum is σ = 4498957440. Its totient is φ = 499884000.

The previous prime is 1649617441. The next prime is 1649617499. The reversal of 1649617464 is 4647169461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124012 + ... + 3124539.

It is an arithmetic number, because the mean of its divisors is an integer number (140592420).

Almost surely, 2^1649617464 is an apocalyptic number.

It is an amenable number.

1649617464 is an abundant number, since it is smaller than the sum of its proper divisors (2849339976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649617464 is a wasteful number, since it uses less digits than its factorization.

1649617464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248571 (or 6248567 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 1649617464 is about 40615.4830575730. The cubic root of 1649617464 is about 1181.5744242803.

The spelling of 1649617464 in words is "one billion, six hundred forty-nine million, six hundred seventeen thousand, four hundred sixty-four".