394687418048 has 336 divisors, whose sum is σ = 1061525570112. Its totient is φ = 141980467200.

The previous prime is 394687418039. The next prime is 394687418063. The reversal of 394687418048 is 840814786493.

It is a super-2 number, since 2×394687418048² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48837368 + ... + 48845448.

It is an arithmetic number, because the mean of its divisors is an integer number (3159302292).

Almost surely, 2^394687418048 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 394687418048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530762785056).

394687418048 is an abundant number, since it is smaller than the sum of its proper divisors (666838152064).

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

394687418048 is a wasteful number, since it uses less digits than its factorization.

394687418048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192 (or 8171 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 394687418048 in words is "three hundred ninety-four billion, six hundred eighty-seven million, four hundred eighteen thousand, forty-eight".