492551893 has 4 divisors (see below), whose sum is σ = 492947500. Its totient is φ = 492156288.

The previous prime is 492551887. The next prime is 492551957. The reversal of 492551893 is 398155294.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94828644 + 397723249 = 9738^2 + 19943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492551893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492551803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195930 + ... + 198427.

It is an arithmetic number, because the mean of its divisors is an integer number (123236875).

Almost surely, 2^492551893 is an apocalyptic number.

It is an amenable number.

492551893 is a deficient number, since it is larger than the sum of its proper divisors (395607).

492551893 is a wasteful number, since it uses less digits than its factorization.

492551893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395606.

The product of its digits is 388800, while the sum is 46.

The square root of 492551893 is about 22193.5101549980. The cubic root of 492551893 is about 789.7397492370.

The spelling of 492551893 in words is "four hundred ninety-two million, five hundred fifty-one thousand, eight hundred ninety-three".