858492631 has 2 divisors, whose sum is σ = 858492632. Its totient is φ = 858492630.

The previous prime is 858492601. The next prime is 858492653. The reversal of 858492631 is 136294858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 858492631 - 2¹¹ = 858490583 is a prime.

It is a super-2 number, since 2×858492631² = 1474019194962604322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858492601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429246315 + 429246316.

It is an arithmetic number, because the mean of its divisors is an integer number (429246316).

Almost surely, 2^858492631 is an apocalyptic number.

858492631 is a deficient number, since it is larger than the sum of its proper divisors (1).

858492631 is an equidigital number, since it uses as much as digits as its factorization.

858492631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 858492631 is about 29300.0448975765. The cubic root of 858492631 is about 950.4126115317.

The spelling of 858492631 in words is "eight hundred fifty-eight million, four hundred ninety-two thousand, six hundred thirty-one".