18273836564738 has 32 divisors (see below), whose sum is σ = 28633573742400. Its totient is φ = 8738842746816.

The previous prime is 18273836564647. The next prime is 18273836564759. The reversal of 18273836564738 is 83746563837281.

It is a super-3 number, since 3×18273836564738³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1618268 + ... + 6258311.

It is an arithmetic number, because the mean of its divisors is an integer number (894799179450).

Almost surely, 2^{18273836564738} is an apocalyptic number.

18273836564738 is a deficient number, since it is larger than the sum of its proper divisors (10359737177662).

18273836564738 is a wasteful number, since it uses less digits than its factorization.

18273836564738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7877186.

The product of its digits is 975421440, while the sum is 71.

The spelling of 18273836564738 in words is "eighteen trillion, two hundred seventy-three billion, eight hundred thirty-six million, five hundred sixty-four thousand, seven hundred thirty-eight".