381045612 has 24 divisors (see below), whose sum is σ = 889560112. Its totient is φ = 126950400.

The previous prime is 381045601. The next prime is 381045617. The reversal of 381045612 is 216540183.

It is a self number, because there is not a number n which added to its sum of digits gives 381045612.

It is not an unprimeable number, because it can be changed into a prime (381045617) 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, 20412 + ... + 34332.

Almost surely, 2^381045612 is an apocalyptic number.

It is an amenable number.

381045612 is an abundant number, since it is smaller than the sum of its proper divisors (508514500).

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

381045612 is a wasteful number, since it uses less digits than its factorization.

381045612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209 (or 16207 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 381045612 is about 19520.3896477504. The cubic root of 381045612 is about 724.9793807850.

Adding to 381045612 its reverse (216540183), we get a palindrome (597585795).

The spelling of 381045612 in words is "three hundred eighty-one million, forty-five thousand, six hundred twelve".