18924646093 has 2 divisors, whose sum is σ = 18924646094. Its totient is φ = 18924646092.

The previous prime is 18924645997. The next prime is 18924646127. The reversal of 18924646093 is 39064642981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12220639209 + 6704006884 = 110547^2 + 81878^2 .

It is a cyclic number.

It is not a de Polignac number, because 18924646093 - 2⁹ = 18924645581 is a prime.

It is a super-3 number, since 3×18924646093³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18924646093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18924646693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9462323046 + 9462323047.

It is an arithmetic number, because the mean of its divisors is an integer number (9462323047).

Almost surely, 2^18924646093 is an apocalyptic number.

It is an amenable number.

18924646093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18924646093 is an equidigital number, since it uses as much as digits as its factorization.

18924646093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 18924646093 in words is "eighteen billion, nine hundred twenty-four million, six hundred forty-six thousand, ninety-three".