18219839146 has 8 divisors (see below), whose sum is σ = 27331274880. Its totient is φ = 9109414188.

The previous prime is 18219839123. The next prime is 18219839153. The reversal of 18219839146 is 64193891281.

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

It is a super-2 number, since 2×18219839146² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18219839093 and 18219839102.

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, 205896 + ... + 280771.

It is an arithmetic number, because the mean of its divisors is an integer number (3416409360).

Almost surely, 2^18219839146 is an apocalyptic number.

18219839146 is a deficient number, since it is larger than the sum of its proper divisors (9111435734).

18219839146 is a wasteful number, since it uses less digits than its factorization.

18219839146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505388.

The product of its digits is 746496, while the sum is 52.

The spelling of 18219839146 in words is "eighteen billion, two hundred nineteen million, eight hundred thirty-nine thousand, one hundred forty-six".