381776585 has 16 divisors (see below), whose sum is σ = 470499840. Its totient is φ = 297286080.

The previous prime is 381776513. The next prime is 381776617. The reversal of 381776585 is 585677183.

It is not a de Polignac number, because 381776585 - 2²² = 377582281 is a prime.

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, 21239 + ... + 34851.

It is an arithmetic number, because the mean of its divisors is an integer number (29406240).

Almost surely, 2^381776585 is an apocalyptic number.

It is an amenable number.

381776585 is a deficient number, since it is larger than the sum of its proper divisors (88723255).

381776585 is a wasteful number, since it uses less digits than its factorization.

381776585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13768.

The product of its digits is 1411200, while the sum is 50.

The square root of 381776585 is about 19539.1039968572. The cubic root of 381776585 is about 725.4426690190.

The spelling of 381776585 in words is "three hundred eighty-one million, seven hundred seventy-six thousand, five hundred eighty-five".