381970850992 has 80 divisors (see below), whose sum is σ = 785892556800. Its totient is φ = 179481367296.

The previous prime is 381970850957. The next prime is 381970850999. The reversal of 381970850992 is 299058079183.

It is a self number, because there is not a number n which added to its sum of digits gives 381970850992.

It is not an unprimeable number, because it can be changed into a prime (381970850999) 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, 4774134 + ... + 4853482.

It is an arithmetic number, because the mean of its divisors is an integer number (9823656960).

Almost surely, 2^381970850992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381970850992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392946278400).

381970850992 is an abundant number, since it is smaller than the sum of its proper divisors (403921705808).

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

381970850992 is a wasteful number, since it uses less digits than its factorization.

381970850992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79610 (or 79604 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 381970850992 in words is "three hundred eighty-one billion, nine hundred seventy million, eight hundred fifty thousand, nine hundred ninety-two".