18532738243 has 2 divisors, whose sum is σ = 18532738244. Its totient is φ = 18532738242.

The previous prime is 18532738177. The next prime is 18532738253. The reversal of 18532738243 is 34283723581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18532738243 - 2²¹ = 18530641091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18532738193 and 18532738202.

It is not a weakly prime, because it can be changed into another prime (18532738253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9266369121 + 9266369122.

It is an arithmetic number, because the mean of its divisors is an integer number (9266369122).

Almost surely, 2^18532738243 is an apocalyptic number.

18532738243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18532738243 is an equidigital number, since it uses as much as digits as its factorization.

18532738243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 46.

The spelling of 18532738243 in words is "eighteen billion, five hundred thirty-two million, seven hundred thirty-eight thousand, two hundred forty-three".