3687749433 has 12 divisors (see below), whose sum is σ = 5330419120. Its totient is φ = 2456805816.

The previous prime is 3687749407. The next prime is 3687749441. The reversal of 3687749433 is 3349477863.

It is a happy number.

It is not a de Polignac number, because 3687749433 - 2³⁰ = 2614007609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3687749433.

It is not an unprimeable number, because it can be changed into a prime (3687749453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127291 + ... + 153552.

Almost surely, 2^3687749433 is an apocalyptic number.

It is an amenable number.

3687749433 is a deficient number, since it is larger than the sum of its proper divisors (1642669687).

3687749433 is a wasteful number, since it uses less digits than its factorization.

3687749433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282308 (or 282305 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The square root of 3687749433 is about 60726.8427715454. The cubic root of 3687749433 is about 1544.9714853191.

The spelling of 3687749433 in words is "three billion, six hundred eighty-seven million, seven hundred forty-nine thousand, four hundred thirty-three".