394564369290 has 192 divisors, whose sum is σ = 1182849785856. Its totient is φ = 82469926656.

The previous prime is 394564369247. The next prime is 394564369321. The reversal of 394564369290 is 92963465493.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3745479 + ... + 3849381.

It is an arithmetic number, because the mean of its divisors is an integer number (6160675968).

Almost surely, 2^394564369290 is an apocalyptic number.

394564369290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 394564369290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591424892928).

394564369290 is an abundant number, since it is smaller than the sum of its proper divisors (788285416566).

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

394564369290 is a wasteful number, since it uses less digits than its factorization.

394564369290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104053 (or 104040 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 60.

The spelling of 394564369290 in words is "three hundred ninety-four billion, five hundred sixty-four million, three hundred sixty-nine thousand, two hundred ninety".