494542489937 has 4 divisors (see below), whose sum is σ = 494860934820. Its totient is φ = 494224045056.

The previous prime is 494542489907. The next prime is 494542489949. The reversal of 494542489937 is 739984245494.

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 28321187521 + 466221302416 = 168289^2 + 682804^2 .

It is a cyclic number.

It is not a de Polignac number, because 494542489937 - 2¹⁴ = 494542473553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494542489907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159220112 + ... + 159223217.

It is an arithmetic number, because the mean of its divisors is an integer number (123715233705).

Almost surely, 2^494542489937 is an apocalyptic number.

It is an amenable number.

494542489937 is a deficient number, since it is larger than the sum of its proper divisors (318444883).

494542489937 is a wasteful number, since it uses less digits than its factorization.

494542489937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318444882.

The product of its digits is 313528320, while the sum is 68.

The spelling of 494542489937 in words is "four hundred ninety-four billion, five hundred forty-two million, four hundred eighty-nine thousand, nine hundred thirty-seven".