18996460738333 has 32 divisors (see below), whose sum is σ = 20839820853600. Its totient is φ = 17209022054400.

The previous prime is 18996460738313. The next prime is 18996460738361. The reversal of 18996460738333 is 33383706469981.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 17865390202009 + 1131070536324 = 4226747^2 + 1063518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18996460738333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996460738313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 649015423 + ... + 649044691.

It is an arithmetic number, because the mean of its divisors is an integer number (651244401675).

Almost surely, 2^{18996460738333} is an apocalyptic number.

18996460738333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18996460738333 is a deficient number, since it is larger than the sum of its proper divisors (1843360115267).

18996460738333 is a wasteful number, since it uses less digits than its factorization.

18996460738333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31153.

The product of its (nonzero) digits is 423263232, while the sum is 70.

The spelling of 18996460738333 in words is "eighteen trillion, nine hundred ninety-six billion, four hundred sixty million, seven hundred thirty-eight thousand, three hundred thirty-three".