394564369380 has 48 divisors (see below), whose sum is σ = 1110952221120. Its totient is φ = 104629356928.

The previous prime is 394564369357. The next prime is 394564369387. The reversal of 394564369380 is 83963465493.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (394564369387) 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, 18358179 + ... + 18379658.

It is an arithmetic number, because the mean of its divisors is an integer number (23144837940).

Almost surely, 2^394564369380 is an apocalyptic number.

394564369380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394564369380 is an abundant number, since it is smaller than the sum of its proper divisors (716387851740).

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

394564369380 is a wasteful number, since it uses less digits than its factorization.

394564369380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36738028 (or 36738026 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 60.

The spelling of 394564369380 in words is "three hundred ninety-four billion, five hundred sixty-four million, three hundred sixty-nine thousand, three hundred eighty".