18432198826 has 8 divisors (see below), whose sum is σ = 27755879940. Its totient is φ = 9180238848.

The previous prime is 18432198797. The next prime is 18432198857. The reversal of 18432198826 is 62889123481.

It can be written as a sum of positive squares in 2 ways, for example, as 17385741025 + 1046457801 = 131855^2 + 32349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18432198826² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17929641 + ... + 17930668.

Almost surely, 2^18432198826 is an apocalyptic number.

18432198826 is a deficient number, since it is larger than the sum of its proper divisors (9323681114).

18432198826 is a wasteful number, since it uses less digits than its factorization.

18432198826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35860568.

The product of its digits is 1327104, while the sum is 52.

The spelling of 18432198826 in words is "eighteen billion, four hundred thirty-two million, one hundred ninety-eight thousand, eight hundred twenty-six".