381816750 has 64 divisors (see below), whose sum is σ = 1089174528. Its totient is φ = 87271200.

The previous prime is 381816749. The next prime is 381816763. The reversal of 381816750 is 57618183.

381816750 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 381816699 and 381816708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31114 + ... + 41613.

It is an arithmetic number, because the mean of its divisors is an integer number (17018352).

Almost surely, 2^381816750 is an apocalyptic number.

381816750 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381816750 is an abundant number, since it is smaller than the sum of its proper divisors (707357778).

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

381816750 is a wasteful number, since it uses less digits than its factorization.

381816750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72754 (or 72744 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 381816750 is about 19540.1317805178. The cubic root of 381816750 is about 725.4681083153.

The spelling of 381816750 in words is "three hundred eighty-one million, eight hundred sixteen thousand, seven hundred fifty".