3649662536 has 32 divisors (see below), whose sum is σ = 7568694840. Its totient is φ = 1638931968.

The previous prime is 3649662509. The next prime is 3649662593. The reversal of 3649662536 is 6352669463.

It can be written as a sum of positive squares in 4 ways, for example, as 3430444900 + 219217636 = 58570^2 + 14806^2 .

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, 470381 + ... + 478076.

Almost surely, 2^3649662536 is an apocalyptic number.

It is an amenable number.

3649662536 is an abundant number, since it is smaller than the sum of its proper divisors (3919032304).

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

3649662536 is a wasteful number, since it uses less digits than its factorization.

3649662536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948513 (or 948509 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 50.

The square root of 3649662536 is about 60412.4369314796. The cubic root of 3649662536 is about 1539.6342719530.

The spelling of 3649662536 in words is "three billion, six hundred forty-nine million, six hundred sixty-two thousand, five hundred thirty-six".