492385881 has 16 divisors (see below), whose sum is σ = 717571904. Its totient is φ = 298482624.

The previous prime is 492385877. The next prime is 492385889. The reversal of 492385881 is 188583294.

It is not a de Polignac number, because 492385881 - 2² = 492385877 is a prime.

It is a super-2 number, since 2×492385881² = 484887711616292322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 492385881.

It is not an unprimeable number, because it can be changed into a prime (492385889) 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, 91606 + ... + 96831.

It is an arithmetic number, because the mean of its divisors is an integer number (44848244).

Almost surely, 2^492385881 is an apocalyptic number.

It is an amenable number.

492385881 is a deficient number, since it is larger than the sum of its proper divisors (225186023).

492385881 is a wasteful number, since it uses less digits than its factorization.

492385881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188520.

The product of its digits is 552960, while the sum is 48.

The square root of 492385881 is about 22189.7697374263. The cubic root of 492385881 is about 789.6510134040.

The spelling of 492385881 in words is "four hundred ninety-two million, three hundred eighty-five thousand, eight hundred eighty-one".