18403838314277 has 16 divisors (see below), whose sum is σ = 20358509561712. Its totient is φ = 16526316003840.

The previous prime is 18403838314259. The next prime is 18403838314349. The reversal of 18403838314277 is 77241383830481.

It can be written as a sum of positive squares in 8 ways, for example, as 259935805921 + 18143902508356 = 509839^2 + 4259566^2 .

It is a cyclic number.

It is not a de Polignac number, because 18403838314277 - 2¹² = 18403838310181 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18403838314237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181238 + ... + 6069639.

It is an arithmetic number, because the mean of its divisors is an integer number (1272406847607).

Almost surely, 2^{18403838314277} is an apocalyptic number.

It is an amenable number.

18403838314277 is a deficient number, since it is larger than the sum of its proper divisors (1954671247435).

18403838314277 is a wasteful number, since it uses less digits than its factorization.

18403838314277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257048.

The product of its (nonzero) digits is 21676032, while the sum is 59.

The spelling of 18403838314277 in words is "eighteen trillion, four hundred three billion, eight hundred thirty-eight million, three hundred fourteen thousand, two hundred seventy-seven".