858493394858 has 16 divisors (see below), whose sum is σ = 1450123741440. Its totient is φ = 377636390400.

The previous prime is 858493394851. The next prime is 858493394867.

858493394858 is nontrivially palindromic in base 10.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (858493394851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629393303 + ... + 629394666.

It is an arithmetic number, because the mean of its divisors is an integer number (90632733840).

Almost surely, 2^858493394858 is an apocalyptic number.

858493394858 is a deficient number, since it is larger than the sum of its proper divisors (591630346582).

858493394858 is a wasteful number, since it uses less digits than its factorization.

858493394858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258788013.

The product of its digits is 1194393600, while the sum is 74.

The spelling of 858493394858 in words is "eight hundred fifty-eight billion, four hundred ninety-three million, three hundred ninety-four thousand, eight hundred fifty-eight".