3781902 has 16 divisors (see below), whose sum is σ = 7725312. Its totient is φ = 1233720.

The previous prime is 3781901. The next prime is 3781903. The reversal of 3781902 is 2091873.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3781901) and next prime (3781903).

It is a self number, because there is not a number n which added to its sum of digits gives 3781902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781901) 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, 6424 + ... + 6987.

It is an arithmetic number, because the mean of its divisors is an integer number (482832).

Almost surely, 2^3781902 is an apocalyptic number.

3781902 is an abundant number, since it is smaller than the sum of its proper divisors (3943410).

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

3781902 is a wasteful number, since it uses less digits than its factorization.

3781902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3781902 is about 1944.7112896263. The cubic root of 3781902 is about 155.8009459861.

The spelling of 3781902 in words is "three million, seven hundred eighty-one thousand, nine hundred two".