18287415143 has 2 divisors, whose sum is σ = 18287415144. Its totient is φ = 18287415142.

The previous prime is 18287415121. The next prime is 18287415169. The reversal of 18287415143 is 34151478281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18287415143 - 2⁶ = 18287415079 is a prime.

It is a super-2 number, since 2×18287415143² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18287415094 and 18287415103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18287415743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9143707571 + 9143707572.

It is an arithmetic number, because the mean of its divisors is an integer number (9143707572).

Almost surely, 2^18287415143 is an apocalyptic number.

18287415143 is a deficient number, since it is larger than the sum of its proper divisors (1).

18287415143 is an equidigital number, since it uses as much as digits as its factorization.

18287415143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The spelling of 18287415143 in words is "eighteen billion, two hundred eighty-seven million, four hundred fifteen thousand, one hundred forty-three".