381819625 has 16 divisors (see below), whose sum is σ = 519831936. Its totient is φ = 277686000.

The previous prime is 381819583. The next prime is 381819631. The reversal of 381819625 is 526918183.

It is not a de Polignac number, because 381819625 - 2¹³ = 381811433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137469 + ... + 140218.

It is an arithmetic number, because the mean of its divisors is an integer number (32489496).

Almost surely, 2^381819625 is an apocalyptic number.

It is an amenable number.

381819625 is a deficient number, since it is larger than the sum of its proper divisors (138012311).

381819625 is a wasteful number, since it uses less digits than its factorization.

381819625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277713 (or 277703 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 381819625 is about 19540.2053469251. The cubic root of 381819625 is about 725.4699291849.

The spelling of 381819625 in words is "three hundred eighty-one million, eight hundred nineteen thousand, six hundred twenty-five".