1859636345423 has 2 divisors, whose sum is σ = 1859636345424. Its totient is φ = 1859636345422.

The previous prime is 1859636345393. The next prime is 1859636345491. The reversal of 1859636345423 is 3245436369581.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1859636345423 - 2²⁶ = 1859569236559 is a prime.

It is a super-2 number, since 2×1859636345423² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1859636347423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 929818172711 + 929818172712.

It is an arithmetic number, because the mean of its divisors is an integer number (929818172712).

Almost surely, 2^{1859636345423} is an apocalyptic number.

1859636345423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1859636345423 is an equidigital number, since it uses as much as digits as its factorization.

1859636345423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 59.

The spelling of 1859636345423 in words is "one trillion, eight hundred fifty-nine billion, six hundred thirty-six million, three hundred forty-five thousand, four hundred twenty-three".