492158391 has 16 divisors (see below), whose sum is σ = 681684960. Its totient is φ = 315463680.

The previous prime is 492158363. The next prime is 492158399. The reversal of 492158391 is 193851294.

It is not a de Polignac number, because 492158391 - 2¹⁸ = 491896247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492158399) 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, 9231 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (42605310).

Almost surely, 2^492158391 is an apocalyptic number.

492158391 is a deficient number, since it is larger than the sum of its proper divisors (189526569).

492158391 is a wasteful number, since it uses less digits than its factorization.

492158391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23746.

The product of its digits is 77760, while the sum is 42.

The square root of 492158391 is about 22184.6431343847. The cubic root of 492158391 is about 789.5293842860.

The spelling of 492158391 in words is "four hundred ninety-two million, one hundred fifty-eight thousand, three hundred ninety-one".