18788049147 has 16 divisors (see below), whose sum is σ = 28634627840. Its totient is φ = 10734070752.

The previous prime is 18788049121. The next prime is 18788049187. The reversal of 18788049147 is 74194088781.

It is not a de Polignac number, because 18788049147 - 2⁶ = 18788049083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18788049187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40629 + ... + 198057.

It is an arithmetic number, because the mean of its divisors is an integer number (1789664240).

Almost surely, 2^18788049147 is an apocalyptic number.

18788049147 is a deficient number, since it is larger than the sum of its proper divisors (9846578693).

18788049147 is a wasteful number, since it uses less digits than its factorization.

18788049147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163122.

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 18788049147 in words is "eighteen billion, seven hundred eighty-eight million, forty-nine thousand, one hundred forty-seven".