858491196293 has 2 divisors, whose sum is σ = 858491196294. Its totient is φ = 858491196292.

The previous prime is 858491196253. The next prime is 858491196313. The reversal of 858491196293 is 392691194858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781486056289 + 77005140004 = 884017^2 + 277498^2 .

It is a cyclic number.

It is not a de Polignac number, because 858491196293 - 2⁸ = 858491196037 is a prime.

It is a super-2 number, since 2×858491196293² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858491196203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429245598146 + 429245598147.

It is an arithmetic number, because the mean of its divisors is an integer number (429245598147).

Almost surely, 2^858491196293 is an apocalyptic number.

It is an amenable number.

858491196293 is a deficient number, since it is larger than the sum of its proper divisors (1).

858491196293 is an equidigital number, since it uses as much as digits as its factorization.

858491196293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33592320, while the sum is 65.

The spelling of 858491196293 in words is "eight hundred fifty-eight billion, four hundred ninety-one million, one hundred ninety-six thousand, two hundred ninety-three".