18640458743 has 2 divisors, whose sum is σ = 18640458744. Its totient is φ = 18640458742.

The previous prime is 18640458701. The next prime is 18640458779. The reversal of 18640458743 is 34785404681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18640458743 - 2²⁸ = 18372023287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18640458691 and 18640458700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18640451743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9320229371 + 9320229372.

It is an arithmetic number, because the mean of its divisors is an integer number (9320229372).

Almost surely, 2^18640458743 is an apocalyptic number.

18640458743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18640458743 is an equidigital number, since it uses as much as digits as its factorization.

18640458743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 18640458743 in words is "eighteen billion, six hundred forty million, four hundred fifty-eight thousand, seven hundred forty-three".