381393445822 has 4 divisors (see below), whose sum is σ = 572090168736. Its totient is φ = 190696722910.

The previous prime is 381393445757. The next prime is 381393445841. The reversal of 381393445822 is 228544393183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228544393183 = 13523 ⋅16900421.

It is a self number, because there is not a number n which added to its sum of digits gives 381393445822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95348361454 + ... + 95348361457.

It is an arithmetic number, because the mean of its divisors is an integer number (143022542184).

Almost surely, 2^381393445822 is an apocalyptic number.

381393445822 is a deficient number, since it is larger than the sum of its proper divisors (190696722914).

381393445822 is a wasteful number, since it uses less digits than its factorization.

381393445822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190696722913.

The product of its digits is 4976640, while the sum is 52.

The spelling of 381393445822 in words is "three hundred eighty-one billion, three hundred ninety-three million, four hundred forty-five thousand, eight hundred twenty-two".