18681364763 has 8 divisors (see below), whose sum is σ = 19265450400. Its totient is φ = 18103395520.

The previous prime is 18681364729. The next prime is 18681364771. The reversal of 18681364763 is 36746318681.

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 18681364763 - 2²⁶ = 18614255899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18681364463) 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 7 ways as a sum of consecutive naturals, for example, 1522895 + ... + 1535112.

It is an arithmetic number, because the mean of its divisors is an integer number (2408181300).

Almost surely, 2^18681364763 is an apocalyptic number.

18681364763 is a deficient number, since it is larger than the sum of its proper divisors (584085637).

18681364763 is a wasteful number, since it uses less digits than its factorization.

18681364763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058197.

The product of its digits is 3483648, while the sum is 53.

It can be divided in two parts, 1868 and 1364763, that added together give a palindrome (1366631).

The spelling of 18681364763 in words is "eighteen billion, six hundred eighty-one million, three hundred sixty-four thousand, seven hundred sixty-three".