381937273 has 4 divisors (see below), whose sum is σ = 392259940. Its totient is φ = 371614608.

The previous prime is 381937243. The next prime is 381937291. The reversal of 381937273 is 372739183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228251664 + 153685609 = 15108^2 + 12397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381937273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381937243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5161278 + ... + 5161351.

It is an arithmetic number, because the mean of its divisors is an integer number (98064985).

Almost surely, 2^381937273 is an apocalyptic number.

It is an amenable number.

381937273 is a deficient number, since it is larger than the sum of its proper divisors (10322667).

381937273 is a wasteful number, since it uses less digits than its factorization.

381937273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322666.

The product of its digits is 190512, while the sum is 43.

The square root of 381937273 is about 19543.2155235519. The cubic root of 381937273 is about 725.5444332317.

The spelling of 381937273 in words is "three hundred eighty-one million, nine hundred thirty-seven thousand, two hundred seventy-three".