18212890626 has 24 divisors (see below), whose sum is σ = 45098586624. Its totient is φ = 5203683000.

The previous prime is 18212890621. The next prime is 18212890627. The reversal of 18212890626 is 62609821281.

18212890626 is a `hidden beast` number, since 1 + 8 + 2 + 12 + 8 + 9 + 0 + 626 = 666.

It is not an unprimeable number, because it can be changed into a prime (18212890621) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 72273250 + ... + 72273501.

It is an arithmetic number, because the mean of its divisors is an integer number (1879107776).

Almost surely, 2^18212890626 is an apocalyptic number.

18212890626 is an abundant number, since it is smaller than the sum of its proper divisors (26885695998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18212890626 is a wasteful number, since it uses less digits than its factorization.

18212890626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144546766 (or 144546763 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18212890626 in words is "eighteen billion, two hundred twelve million, eight hundred ninety thousand, six hundred twenty-six".