18944196386 has 8 divisors (see below), whose sum is σ = 28529507664. Its totient is φ = 9434360500.

The previous prime is 18944196281. The next prime is 18944196407. The reversal of 18944196386 is 68369144981.

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

It is a super-2 number, since 2×18944196386² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18868220 + ... + 18869223.

It is an arithmetic number, because the mean of its divisors is an integer number (3566188458).

Almost surely, 2^18944196386 is an apocalyptic number.

18944196386 is a deficient number, since it is larger than the sum of its proper divisors (9585311278).

18944196386 is a wasteful number, since it uses less digits than its factorization.

18944196386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37737696.

The product of its digits is 8957952, while the sum is 59.

The spelling of 18944196386 in words is "eighteen billion, nine hundred forty-four million, one hundred ninety-six thousand, three hundred eighty-six".