18154329793 has 2 divisors, whose sum is σ = 18154329794. Its totient is φ = 18154329792.

The previous prime is 18154329763. The next prime is 18154329803. The reversal of 18154329793 is 39792345181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9893883024 + 8260446769 = 99468^2 + 90887^2 .

It is a cyclic number.

It is not a de Polignac number, because 18154329793 - 2⁵ = 18154329761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18154329793.

It is not a weakly prime, because it can be changed into another prime (18154329763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9077164896 + 9077164897.

It is an arithmetic number, because the mean of its divisors is an integer number (9077164897).

Almost surely, 2^18154329793 is an apocalyptic number.

It is an amenable number.

18154329793 is a deficient number, since it is larger than the sum of its proper divisors (1).

18154329793 is an equidigital number, since it uses as much as digits as its factorization.

18154329793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The spelling of 18154329793 in words is "eighteen billion, one hundred fifty-four million, three hundred twenty-nine thousand, seven hundred ninety-three".