18702226544 has 10 divisors (see below), whose sum is σ = 36235563960. Its totient is φ = 9351113264.

The previous prime is 18702226531. The next prime is 18702226549. The reversal of 18702226544 is 44562220781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18702226549) 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 as a sum of consecutive naturals, namely, 584444564 + ... + 584444595.

It is an arithmetic number, because the mean of its divisors is an integer number (3623556396).

Almost surely, 2^18702226544 is an apocalyptic number.

It is an amenable number.

18702226544 is a deficient number, since it is larger than the sum of its proper divisors (17533337416).

18702226544 is a wasteful number, since it uses less digits than its factorization.

18702226544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168889167 (or 1168889161 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 18702226544 in words is "eighteen billion, seven hundred two million, two hundred twenty-six thousand, five hundred forty-four".