18203294193 has 32 divisors (see below), whose sum is σ = 28442002176. Its totient is φ = 10140519168.

The previous prime is 18203294183. The next prime is 18203294201. The reversal of 18203294193 is 39149230281.

It is not a de Polignac number, because 18203294193 - 2⁴ = 18203294177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18203294183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122655 + ... + 226827.

It is an arithmetic number, because the mean of its divisors is an integer number (888812568).

Almost surely, 2^18203294193 is an apocalyptic number.

It is an amenable number.

18203294193 is a deficient number, since it is larger than the sum of its proper divisors (10238707983).

18203294193 is a wasteful number, since it uses less digits than its factorization.

18203294193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104393.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 18203294193 in words is "eighteen billion, two hundred three million, two hundred ninety-four thousand, one hundred ninety-three".