381703815 has 24 divisors (see below), whose sum is σ = 662369760. Its totient is φ = 203344704.

The previous prime is 381703811. The next prime is 381703831. The reversal of 381703815 is 518307183.

It is not a de Polignac number, because 381703815 - 2² = 381703811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381703815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381703811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39921 + ... + 48549.

It is an arithmetic number, because the mean of its divisors is an integer number (27598740).

Almost surely, 2^381703815 is an apocalyptic number.

381703815 is a deficient number, since it is larger than the sum of its proper divisors (280665945).

381703815 is a wasteful number, since it uses less digits than its factorization.

381703815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9623 (or 9620 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 381703815 is about 19537.2417449342. The cubic root of 381703815 is about 725.3965741565.

The spelling of 381703815 in words is "three hundred eighty-one million, seven hundred three thousand, eight hundred fifteen".