3781912308 has 72 divisors (see below), whose sum is σ = 9093730464. Its totient is φ = 1222827840.

The previous prime is 3781912291. The next prime is 3781912319. The reversal of 3781912308 is 8032191873.

It is a self number, because there is not a number n which added to its sum of digits gives 3781912308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19800493 + ... + 19800683.

It is an arithmetic number, because the mean of its divisors is an integer number (126301812).

Almost surely, 2^3781912308 is an apocalyptic number.

It is an amenable number.

3781912308 is an abundant number, since it is smaller than the sum of its proper divisors (5311818156).

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

3781912308 is a wasteful number, since it uses less digits than its factorization.

3781912308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 3781912308 is about 61497.2544753016. The cubic root of 3781912308 is about 1558.0108753703.

The spelling of 3781912308 in words is "three billion, seven hundred eighty-one million, nine hundred twelve thousand, three hundred eight".