16778849194 has 8 divisors (see below), whose sum is σ = 26492919840. Its totient is φ = 7947875916.

The previous prime is 16778849179. The next prime is 16778849237. The reversal of 16778849194 is 49194887761.

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, 220774294 + ... + 220774369.

It is an arithmetic number, because the mean of its divisors is an integer number (3311614980).

Almost surely, 2^16778849194 is an apocalyptic number.

16778849194 is a deficient number, since it is larger than the sum of its proper divisors (9714070646).

16778849194 is a wasteful number, since it uses less digits than its factorization.

16778849194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441548684.

The product of its digits is 24385536, while the sum is 64.

The spelling of 16778849194 in words is "sixteen billion, seven hundred seventy-eight million, eight hundred forty-nine thousand, one hundred ninety-four".