3781472639 has 24 divisors (see below), whose sum is σ = 4689025200. Its totient is φ = 3030026496.

The previous prime is 3781472627. The next prime is 3781472647. The reversal of 3781472639 is 9362741873.

It is a de Polignac number, because none of the positive numbers 2^k-3781472639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781472609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108884 + ... + 139350.

It is an arithmetic number, because the mean of its divisors is an integer number (195376050).

Almost surely, 2^3781472639 is an apocalyptic number.

3781472639 is a deficient number, since it is larger than the sum of its proper divisors (907552561).

3781472639 is a wasteful number, since it uses less digits than its factorization.

3781472639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30647 (or 30640 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The square root of 3781472639 is about 61493.6796671007. The cubic root of 3781472639 is about 1557.9504971300.

The spelling of 3781472639 in words is "three billion, seven hundred eighty-one million, four hundred seventy-two thousand, six hundred thirty-nine".