18634289145859 has 4 divisors (see below), whose sum is σ = 18730839867016. Its totient is φ = 18537738424704.

The previous prime is 18634289145817. The next prime is 18634289145887. The reversal of 18634289145859 is 95854198243681.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18634289145859 - 2¹⁷ = 18634289014787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18634289145791 and 18634289145800.

It is not an unprimeable number, because it can be changed into a prime (18634289145259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48275360289 + ... + 48275360674.

It is an arithmetic number, because the mean of its divisors is an integer number (4682709966754).

Almost surely, 2^{18634289145859} is an apocalyptic number.

18634289145859 is a deficient number, since it is larger than the sum of its proper divisors (96550721157).

18634289145859 is an equidigital number, since it uses as much as digits as its factorization.

18634289145859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96550721156.

The product of its digits is 597196800, while the sum is 73.

The spelling of 18634289145859 in words is "eighteen trillion, six hundred thirty-four billion, two hundred eighty-nine million, one hundred forty-five thousand, eight hundred fifty-nine".