381249718 has 32 divisors (see below), whose sum is σ = 646652160. Its totient is φ = 167623680.

The previous prime is 381249707. The next prime is 381249719. The reversal of 381249718 is 817942183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381249719) 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, 24330 + ... + 36802.

It is an arithmetic number, because the mean of its divisors is an integer number (20207880).

Almost surely, 2^381249718 is an apocalyptic number.

381249718 is a deficient number, since it is larger than the sum of its proper divisors (265402442).

381249718 is a wasteful number, since it uses less digits than its factorization.

381249718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12552.

The product of its digits is 96768, while the sum is 43.

The square root of 381249718 is about 19525.6169684853. The cubic root of 381249718 is about 725.1088020619.

The spelling of 381249718 in words is "three hundred eighty-one million, two hundred forty-nine thousand, seven hundred eighteen".