494920317589 has 8 divisors (see below), whose sum is σ = 497286803160. Its totient is φ = 492558124800.

The previous prime is 494920317587. The next prime is 494920317607. The reversal of 494920317589 is 985713029494.

It can be written as a sum of positive squares in 4 ways, for example, as 194451895089 + 300468422500 = 440967^2 + 548150^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 494920317589 - 2¹ = 494920317587 is a prime.

It is a super-2 number, since 2×494920317589² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494920317587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841944 + ... + 1303345.

It is an arithmetic number, because the mean of its divisors is an integer number (62160850395).

Almost surely, 2^494920317589 is an apocalyptic number.

It is an amenable number.

494920317589 is a deficient number, since it is larger than the sum of its proper divisors (2366485571).

494920317589 is a wasteful number, since it uses less digits than its factorization.

494920317589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146391.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 494920317589 in words is "four hundred ninety-four billion, nine hundred twenty million, three hundred seventeen thousand, five hundred eighty-nine".