3781994172 has 48 divisors (see below), whose sum is σ = 9937449984. Its totient is φ = 1109088000.

The previous prime is 3781994143. The next prime is 3781994191. The reversal of 3781994172 is 2714991873.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458029 + ... + 466212.

It is an arithmetic number, because the mean of its divisors is an integer number (207030208).

Almost surely, 2^3781994172 is an apocalyptic number.

It is an amenable number.

3781994172 is an abundant number, since it is smaller than the sum of its proper divisors (6155455812).

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

3781994172 is a wasteful number, since it uses less digits than its factorization.

3781994172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924290 (or 924288 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 3781994172 is about 61497.9200623891. The cubic root of 3781994172 is about 1558.0221169567.

The spelling of 3781994172 in words is "three billion, seven hundred eighty-one million, nine hundred ninety-four thousand, one hundred seventy-two".