492801985 has 16 divisors (see below), whose sum is σ = 637615440. Its totient is φ = 363479040.

The previous prime is 492801961. The next prime is 492801997. The reversal of 492801985 is 589108294.

It can be written as a sum of positive squares in 8 ways, for example, as 183006784 + 309795201 = 13528^2 + 17601^2 .

It is not a de Polignac number, because 492801985 - 2¹⁵ = 492769217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56305 + ... + 64465.

It is an arithmetic number, because the mean of its divisors is an integer number (39850965).

Almost surely, 2^492801985 is an apocalyptic number.

It is an amenable number.

492801985 is a deficient number, since it is larger than the sum of its proper divisors (144813455).

492801985 is a wasteful number, since it uses less digits than its factorization.

492801985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 492801985 is about 22199.1437897951. The cubic root of 492801985 is about 789.8733894196.

The spelling of 492801985 in words is "four hundred ninety-two million, eight hundred one thousand, nine hundred eighty-five".