18226499426 has 16 divisors (see below), whose sum is σ = 27419752800. Its totient is φ = 9086622048.

The previous prime is 18226499393. The next prime is 18226499429. The reversal of 18226499426 is 62499462281.

It is not an unprimeable number, because it can be changed into a prime (18226499429) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 964646 + ... + 983358.

It is an arithmetic number, because the mean of its divisors is an integer number (1713734550).

Almost surely, 2^18226499426 is an apocalyptic number.

18226499426 is a deficient number, since it is larger than the sum of its proper divisors (9193253374).

18226499426 is a wasteful number, since it uses less digits than its factorization.

18226499426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20113.

The product of its digits is 2985984, while the sum is 53.

The spelling of 18226499426 in words is "eighteen billion, two hundred twenty-six million, four hundred ninety-nine thousand, four hundred twenty-six".