18771904245 has 32 divisors (see below), whose sum is σ = 30328531200. Its totient is φ = 9913964544.

The previous prime is 18771904127. The next prime is 18771904267. The reversal of 18771904245 is 54240917781.

It is not a de Polignac number, because 18771904245 - 2¹⁰ = 18771903221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18771904194 and 18771904203.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5179504 + ... + 5183126.

It is an arithmetic number, because the mean of its divisors is an integer number (947766600).

Almost surely, 2^18771904245 is an apocalyptic number.

18771904245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18771904245 is a deficient number, since it is larger than the sum of its proper divisors (11556626955).

18771904245 is a wasteful number, since it uses less digits than its factorization.

18771904245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 18771904245 in words is "eighteen billion, seven hundred seventy-one million, nine hundred four thousand, two hundred forty-five".