394610536491 has 16 divisors (see below), whose sum is σ = 544319996160. Its totient is φ = 253988370720.

The previous prime is 394610536447. The next prime is 394610536577. The reversal of 394610536491 is 194635016493.

It is not a de Polignac number, because 394610536491 - 2⁶ = 394610536427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394610536291) 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, 1627626 + ... + 1854288.

It is an arithmetic number, because the mean of its divisors is an integer number (34019999760).

Almost surely, 2^394610536491 is an apocalyptic number.

394610536491 is a deficient number, since it is larger than the sum of its proper divisors (149709459669).

394610536491 is a wasteful number, since it uses less digits than its factorization.

394610536491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246706.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 394610536491 in words is "three hundred ninety-four billion, six hundred ten million, five hundred thirty-six thousand, four hundred ninety-one".