381855051822 has 32 divisors (see below), whose sum is σ = 785759342112. Its totient is φ = 123622498944.

The previous prime is 381855051821. The next prime is 381855051887. The reversal of 381855051822 is 228150558183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381855051821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420393 + ... + 1667700.

It is an arithmetic number, because the mean of its divisors is an integer number (24554979441).

Almost surely, 2^381855051822 is an apocalyptic number.

381855051822 is an abundant number, since it is smaller than the sum of its proper divisors (403904290290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381855051822 is a wasteful number, since it uses less digits than its factorization.

381855051822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088692.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 381855051822 in words is "three hundred eighty-one billion, eight hundred fifty-five million, fifty-one thousand, eight hundred twenty-two".