18702009245 has 8 divisors (see below), whose sum is σ = 22464398040. Its totient is φ = 14946949440.

The previous prime is 18702009241. The next prime is 18702009257. The reversal of 18702009245 is 54290020781.

It can be written as a sum of positive squares in 4 ways, for example, as 489427129 + 18212582116 = 22123^2 + 134954^2 .

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

It is not a de Polignac number, because 18702009245 - 2² = 18702009241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18702009199 and 18702009208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18702009241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1826630 + ... + 1836839.

It is an arithmetic number, because the mean of its divisors is an integer number (2808049755).

Almost surely, 2^18702009245 is an apocalyptic number.

It is an amenable number.

18702009245 is a deficient number, since it is larger than the sum of its proper divisors (3762388795).

18702009245 is a wasteful number, since it uses less digits than its factorization.

18702009245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664495.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 18702009245 in words is "eighteen billion, seven hundred two million, nine thousand, two hundred forty-five".