381481593 has 4 divisors (see below), whose sum is σ = 508642128. Its totient is φ = 254321060.

The previous prime is 381481561. The next prime is 381481603. The reversal of 381481593 is 395184183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381481593 - 2⁵ = 381481561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381481193) 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, 63580263 + ... + 63580268.

It is an arithmetic number, because the mean of its divisors is an integer number (127160532).

Almost surely, 2^381481593 is an apocalyptic number.

It is an amenable number.

381481593 is a deficient number, since it is larger than the sum of its proper divisors (127160535).

381481593 is a wasteful number, since it uses less digits than its factorization.

381481593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127160534.

The product of its digits is 103680, while the sum is 42.

The square root of 381481593 is about 19531.5537784376. The cubic root of 381481593 is about 725.2557753104.

The spelling of 381481593 in words is "three hundred eighty-one million, four hundred eighty-one thousand, five hundred ninety-three".