18819678294 has 32 divisors (see below), whose sum is σ = 42252668640. Its totient is φ = 6208551936.

The previous prime is 18819678271. The next prime is 18819678301. The reversal of 18819678294 is 49287691881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1791219 + ... + 1801694.

It is an arithmetic number, because the mean of its divisors is an integer number (1320395895).

Almost surely, 2^18819678294 is an apocalyptic number.

18819678294 is an abundant number, since it is smaller than the sum of its proper divisors (23432990346).

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

18819678294 is a wasteful number, since it uses less digits than its factorization.

18819678294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593021 (or 3593015 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 63.

The spelling of 18819678294 in words is "eighteen billion, eight hundred nineteen million, six hundred seventy-eight thousand, two hundred ninety-four".