18358126366 has 4 divisors (see below), whose sum is σ = 27537189552. Its totient is φ = 9179063182.

The previous prime is 18358126343. The next prime is 18358126399. The reversal of 18358126366 is 66362185381.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4589531590 + ... + 4589531593.

It is an arithmetic number, because the mean of its divisors is an integer number (6884297388).

Almost surely, 2^18358126366 is an apocalyptic number.

18358126366 is a deficient number, since it is larger than the sum of its proper divisors (9179063186).

18358126366 is an equidigital number, since it uses as much as digits as its factorization.

18358126366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179063185.

The product of its digits is 1244160, while the sum is 49.

It can be divided in two parts, 1835 and 8126366, that added together give a square (8128201 = 2851²).

The spelling of 18358126366 in words is "eighteen billion, three hundred fifty-eight million, one hundred twenty-six thousand, three hundred sixty-six".