18181882502 has 16 divisors (see below), whose sum is σ = 31179617280. Its totient is φ = 7789566408.

The previous prime is 18181882489. The next prime is 18181882541. The reversal of 18181882502 is 20528818181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179798 + ... + 262089.

It is an arithmetic number, because the mean of its divisors is an integer number (1948726080).

Almost surely, 2^18181882502 is an apocalyptic number.

18181882502 is a deficient number, since it is larger than the sum of its proper divisors (12997734778).

18181882502 is a wasteful number, since it uses less digits than its factorization.

18181882502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444835.

The product of its (nonzero) digits is 81920, while the sum is 44.

The spelling of 18181882502 in words is "eighteen billion, one hundred eighty-one million, eight hundred eighty-two thousand, five hundred two".