18869549386 has 8 divisors (see below), whose sum is σ = 28312045344. Its totient is φ = 9432200940.

The previous prime is 18869549359. The next prime is 18869549407. The reversal of 18869549386 is 68394596881.

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

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, 1277700 + ... + 1292383.

It is an arithmetic number, because the mean of its divisors is an integer number (3539005668).

Almost surely, 2^18869549386 is an apocalyptic number.

18869549386 is a deficient number, since it is larger than the sum of its proper divisors (9442495958).

18869549386 is a wasteful number, since it uses less digits than its factorization.

18869549386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573756.

The product of its digits is 89579520, while the sum is 67.

The spelling of 18869549386 in words is "eighteen billion, eight hundred sixty-nine million, five hundred forty-nine thousand, three hundred eighty-six".