381391422499 has 4 divisors (see below), whose sum is σ = 389506133664. Its totient is φ = 373276711336.

The previous prime is 381391422481. The next prime is 381391422539. The reversal of 381391422499 is 994224193183.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-381391422499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381391422449) 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, 4057355512 + ... + 4057355605.

It is an arithmetic number, because the mean of its divisors is an integer number (97376533416).

Almost surely, 2^381391422499 is an apocalyptic number.

381391422499 is a deficient number, since it is larger than the sum of its proper divisors (8114711165).

381391422499 is an equidigital number, since it uses as much as digits as its factorization.

381391422499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114711164.

The product of its digits is 3359232, while the sum is 55.

The spelling of 381391422499 in words is "three hundred eighty-one billion, three hundred ninety-one million, four hundred twenty-two thousand, four hundred ninety-nine".