394754365820 has 48 divisors (see below), whose sum is σ = 846716709888. Its totient is φ = 154524870720.

The previous prime is 394754365729. The next prime is 394754365823. The reversal of 394754365820 is 28563457493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394754365823) 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, 11302985 + ... + 11337855.

It is an arithmetic number, because the mean of its divisors is an integer number (17639931456).

Almost surely, 2^394754365820 is an apocalyptic number.

It is an amenable number.

394754365820 is an abundant number, since it is smaller than the sum of its proper divisors (451962344068).

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

394754365820 is a wasteful number, since it uses less digits than its factorization.

394754365820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46970 (or 46968 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 394754365820 in words is "three hundred ninety-four billion, seven hundred fifty-four million, three hundred sixty-five thousand, eight hundred twenty".