18630798784729 has 16 divisors (see below), whose sum is σ = 19762156431360. Its totient is φ = 17515039050000.

The previous prime is 18630798784669. The next prime is 18630798784747. The reversal of 18630798784729 is 92748789703681.

It is a cyclic number.

It is not a de Polignac number, because 18630798784729 - 2¹¹ = 18630798782681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18630798784789) 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, 5915437 + ... + 8500234.

It is an arithmetic number, because the mean of its divisors is an integer number (1235134776960).

Almost surely, 2^{18630798784729} is an apocalyptic number.

18630798784729 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18630798784729 is a deficient number, since it is larger than the sum of its proper divisors (1131357646631).

18630798784729 is a wasteful number, since it uses less digits than its factorization.

18630798784729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14416212.

The product of its (nonzero) digits is 2048385024, while the sum is 79.

The spelling of 18630798784729 in words is "eighteen trillion, six hundred thirty billion, seven hundred ninety-eight million, seven hundred eighty-four thousand, seven hundred twenty-nine".