1649659732 has 24 divisors (see below), whose sum is σ = 3300804864. Its totient is φ = 706678752.

The previous prime is 1649659717. The next prime is 1649659741. The reversal of 1649659732 is 2379569461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1649659732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56478 + ... + 80554.

It is an arithmetic number, because the mean of its divisors is an integer number (137533536).

Almost surely, 2^1649659732 is an apocalyptic number.

It is an amenable number.

1649659732 is an abundant number, since it is smaller than the sum of its proper divisors (1651145132).

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

1649659732 is a wasteful number, since it uses less digits than its factorization.

1649659732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26535 (or 26533 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 52.

The square root of 1649659732 is about 40616.0033976757. The cubic root of 1649659732 is about 1181.5845159858.

The spelling of 1649659732 in words is "one billion, six hundred forty-nine million, six hundred fifty-nine thousand, seven hundred thirty-two".