394611681363 has 16 divisors (see below), whose sum is σ = 527830772736. Its totient is φ = 262234198080.

The previous prime is 394611681323. The next prime is 394611681403. The reversal of 394611681363 is 363186116493.

It is an interprime number because it is at equal distance from previous prime (394611681323) and next prime (394611681403).

It is not a de Polignac number, because 394611681363 - 2⁹ = 394611680851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394611681323) 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, 2287218 + ... + 2453688.

It is an arithmetic number, because the mean of its divisors is an integer number (32989423296).

Almost surely, 2^394611681363 is an apocalyptic number.

394611681363 is a deficient number, since it is larger than the sum of its proper divisors (133219091373).

394611681363 is a wasteful number, since it uses less digits than its factorization.

394611681363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168994.

The product of its digits is 1679616, while the sum is 51.

The spelling of 394611681363 in words is "three hundred ninety-four billion, six hundred eleven million, six hundred eighty-one thousand, three hundred sixty-three".