3781038072 has 32 divisors (see below), whose sum is σ = 10802966400. Its totient is φ = 1080296544.

The previous prime is 3781038071. The next prime is 3781038083. The reversal of 3781038072 is 2708301873.

It is a self number, because there is not a number n which added to its sum of digits gives 3781038072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781038071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11252922 + ... + 11253257.

It is an arithmetic number, because the mean of its divisors is an integer number (337592700).

Almost surely, 2^3781038072 is an apocalyptic number.

It is an amenable number.

3781038072 is an abundant number, since it is smaller than the sum of its proper divisors (7021928328).

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

3781038072 is a wasteful number, since it uses less digits than its factorization.

3781038072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22506195 (or 22506191 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 3781038072 is about 61490.1461374097. The cubic root of 3781038072 is about 1557.8908149308.

The spelling of 3781038072 in words is "three billion, seven hundred eighty-one million, thirty-eight thousand, seventy-two".