3781174638 has 8 divisors (see below), whose sum is σ = 7562349288. Its totient is φ = 1260391544.

The previous prime is 3781174619. The next prime is 3781174717. The reversal of 3781174638 is 8364711873.

It is a sphenic number, since it is the product of 3 distinct primes.

3781174638 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315097881 + ... + 315097892.

It is an arithmetic number, because the mean of its divisors is an integer number (945293661).

Almost surely, 2^3781174638 is an apocalyptic number.

3781174638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3781174638 is a wasteful number, since it uses less digits than its factorization.

3781174638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630195778.

The product of its digits is 677376, while the sum is 48.

The square root of 3781174638 is about 61491.2565979912. The cubic root of 3781174638 is about 1557.9095710106.

The spelling of 3781174638 in words is "three billion, seven hundred eighty-one million, one hundred seventy-four thousand, six hundred thirty-eight".