381612612 has 24 divisors (see below), whose sum is σ = 893606112. Its totient is φ = 126750400.

The previous prime is 381612589. The next prime is 381612613. The reversal of 381612612 is 216216183.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 381612612.

It is not an unprimeable number, because it can be changed into a prime (381612613) 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, 53214 + ... + 59957.

It is an arithmetic number, because the mean of its divisors is an integer number (37233588).

Almost surely, 2^381612612 is an apocalyptic number.

It is an amenable number.

381612612 is an abundant number, since it is smaller than the sum of its proper divisors (511993500).

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

381612612 is a wasteful number, since it uses less digits than its factorization.

381612612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113459 (or 113457 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 381612612 is about 19534.9075247363. The cubic root of 381612612 is about 725.3387949649.

Adding to 381612612 its reverse (216216183), we get a palindrome (597828795).

The spelling of 381612612 in words is "three hundred eighty-one million, six hundred twelve thousand, six hundred twelve".