3649901664 has 48 divisors (see below), whose sum is σ = 9618337008. Its totient is φ = 1211891712.

The previous prime is 3649901627. The next prime is 3649901687. The reversal of 3649901664 is 4661099463.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 49297 + ... + 98640.

It is an arithmetic number, because the mean of its divisors is an integer number (200382021).

Almost surely, 2^3649901664 is an apocalyptic number.

It is an amenable number.

3649901664 is an abundant number, since it is smaller than the sum of its proper divisors (5968435344).

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

3649901664 is a wasteful number, since it uses less digits than its factorization.

3649901664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148207 (or 148199 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 3649901664 is about 60414.4160279647. The cubic root of 3649901664 is about 1539.6678971280.

The spelling of 3649901664 in words is "three billion, six hundred forty-nine million, nine hundred one thousand, six hundred sixty-four".