381023999994 has 64 divisors (see below), whose sum is σ = 859306659840. Its totient is φ = 111585600000.

The previous prime is 381023999959. The next prime is 381024000001. The reversal of 381023999994 is 499999320183.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1385994 + ... + 1637994.

It is an arithmetic number, because the mean of its divisors is an integer number (13426666560).

Almost surely, 2^381023999994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381023999994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429653329920).

381023999994 is an abundant number, since it is smaller than the sum of its proper divisors (478282659846).

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

381023999994 is a wasteful number, since it uses less digits than its factorization.

381023999994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252787.

The product of its (nonzero) digits is 34012224, while the sum is 66.

The spelling of 381023999994 in words is "three hundred eighty-one billion, twenty-three million, nine hundred ninety-nine thousand, nine hundred ninety-four".