381239612 has 48 divisors (see below), whose sum is σ = 752338944. Its totient is φ = 167832000.

The previous prime is 381239611. The next prime is 381239641. The reversal of 381239612 is 216932183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381239611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112787 + ... + 116117.

It is an arithmetic number, because the mean of its divisors is an integer number (15673728).

Almost surely, 2^381239612 is an apocalyptic number.

It is an amenable number.

381239612 is a deficient number, since it is larger than the sum of its proper divisors (371099332).

381239612 is a wasteful number, since it uses less digits than its factorization.

381239612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3448 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 381239612 is about 19525.3581785329. The cubic root of 381239612 is about 725.1023950501.

The spelling of 381239612 in words is "three hundred eighty-one million, two hundred thirty-nine thousand, six hundred twelve".