18207235246 has 12 divisors (see below), whose sum is σ = 29011875768. Its totient is φ = 8568110432.

The previous prime is 18207235231. The next prime is 18207235247. The reversal of 18207235246 is 64253270281.

It is a junction number, because it is equal to n+sod(n) for n = 18207235199 and 18207235208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18207235247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15749626 + ... + 15750781.

It is an arithmetic number, because the mean of its divisors is an integer number (2417656314).

Almost surely, 2^18207235246 is an apocalyptic number.

18207235246 is a deficient number, since it is larger than the sum of its proper divisors (10804640522).

18207235246 is a wasteful number, since it uses less digits than its factorization.

18207235246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31500443 (or 31500426 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 18207235246 in words is "eighteen billion, two hundred seven million, two hundred thirty-five thousand, two hundred forty-six".