18518351743 has 2 divisors, whose sum is σ = 18518351744. Its totient is φ = 18518351742.

The previous prime is 18518351707. The next prime is 18518351777. The reversal of 18518351743 is 34715381581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18518351743 - 2¹⁷ = 18518220671 is a prime.

It is a super-2 number, since 2×18518351743² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18518351693 and 18518351702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18518351783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9259175871 + 9259175872.

It is an arithmetic number, because the mean of its divisors is an integer number (9259175872).

Almost surely, 2^18518351743 is an apocalyptic number.

18518351743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18518351743 is an equidigital number, since it uses as much as digits as its factorization.

18518351743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 46.

The spelling of 18518351743 in words is "eighteen billion, five hundred eighteen million, three hundred fifty-one thousand, seven hundred forty-three".