381673427 has 4 divisors (see below), whose sum is σ = 382470720. Its totient is φ = 380876136.

The previous prime is 381673423. The next prime is 381673429. The reversal of 381673427 is 724376183.

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

It is a cyclic number.

It is not a de Polignac number, because 381673427 - 2² = 381673423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381673423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397928 + ... + 398885.

It is an arithmetic number, because the mean of its divisors is an integer number (95617680).

Almost surely, 2^381673427 is an apocalyptic number.

381673427 is a deficient number, since it is larger than the sum of its proper divisors (797293).

381673427 is an equidigital number, since it uses as much as digits as its factorization.

381673427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797292.

The product of its digits is 169344, while the sum is 41.

The square root of 381673427 is about 19536.4640352342. The cubic root of 381673427 is about 725.3773236843.

The spelling of 381673427 in words is "three hundred eighty-one million, six hundred seventy-three thousand, four hundred twenty-seven".