381542365 has 8 divisors (see below), whose sum is σ = 458023608. Its totient is φ = 305118720.

The previous prime is 381542323. The next prime is 381542411. The reversal of 381542365 is 563245183.

It can be written as a sum of positive squares in 4 ways, for example, as 50083929 + 331458436 = 7077^2 + 18206^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381542365 - 2²⁵ = 347987933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 27685.

It is an arithmetic number, because the mean of its divisors is an integer number (57252951).

Almost surely, 2^381542365 is an apocalyptic number.

It is an amenable number.

381542365 is a deficient number, since it is larger than the sum of its proper divisors (76481243).

381542365 is a wasteful number, since it uses less digits than its factorization.

381542365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28799.

The product of its digits is 86400, while the sum is 37.

The square root of 381542365 is about 19533.1094554861. The cubic root of 381542365 is about 725.2942856033.

The spelling of 381542365 in words is "three hundred eighty-one million, five hundred forty-two thousand, three hundred sixty-five".