18999242626 has 48 divisors (see below), whose sum is σ = 35322326208. Its totient is φ = 7504660800.

The previous prime is 18999242617. The next prime is 18999242629. The reversal of 18999242626 is 62624299981.

It is not an unprimeable number, because it can be changed into a prime (18999242629) 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 23 ways as a sum of consecutive naturals, for example, 1629096 + ... + 1640716.

It is an arithmetic number, because the mean of its divisors is an integer number (735881796).

Almost surely, 2^18999242626 is an apocalyptic number.

18999242626 is a deficient number, since it is larger than the sum of its proper divisors (16323083582).

18999242626 is a wasteful number, since it uses less digits than its factorization.

18999242626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12347 (or 12334 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The spelling of 18999242626 in words is "eighteen billion, nine hundred ninety-nine million, two hundred forty-two thousand, six hundred twenty-six".