18811826642 has 8 divisors (see below), whose sum is σ = 32248845696. Its totient is φ = 8062211412.

The previous prime is 18811826623. The next prime is 18811826651. The reversal of 18811826642 is 24662811881.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671850938 + ... + 671850965.

It is an arithmetic number, because the mean of its divisors is an integer number (4031105712).

Almost surely, 2^18811826642 is an apocalyptic number.

18811826642 is a deficient number, since it is larger than the sum of its proper divisors (13437019054).

18811826642 is a wasteful number, since it uses less digits than its factorization.

18811826642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343701912.

The product of its digits is 294912, while the sum is 47.

The spelling of 18811826642 in words is "eighteen billion, eight hundred eleven million, eight hundred twenty-six thousand, six hundred forty-two".