18641852994 has 8 divisors (see below), whose sum is σ = 37283706000. Its totient is φ = 6213950996.

The previous prime is 18641852987. The next prime is 18641853019. The reversal of 18641852994 is 49925814681.

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

18641852994 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1553487744 + ... + 1553487755.

It is an arithmetic number, because the mean of its divisors is an integer number (4660463250).

Almost surely, 2^18641852994 is an apocalyptic number.

18641852994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18641852994 is a wasteful number, since it uses less digits than its factorization.

18641852994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106975504.

The product of its digits is 4976640, while the sum is 57.

The spelling of 18641852994 in words is "eighteen billion, six hundred forty-one million, eight hundred fifty-two thousand, nine hundred ninety-four".