18342501849 has 24 divisors (see below), whose sum is σ = 32060845440. Its totient is φ = 9864874368.

The previous prime is 18342501833. The next prime is 18342501899. The reversal of 18342501849 is 94810524381.

18342501849 is a `hidden beast` number, since 183 + 425 + 0 + 1 + 8 + 49 = 666.

It is not a de Polignac number, because 18342501849 - 2⁴ = 18342501833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18342501899) 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 23 ways as a sum of consecutive naturals, for example, 8562189 + ... + 8564330.

It is an arithmetic number, because the mean of its divisors is an integer number (1335868560).

Almost surely, 2^18342501849 is an apocalyptic number.

It is an amenable number.

18342501849 is a deficient number, since it is larger than the sum of its proper divisors (13718343591).

18342501849 is a wasteful number, since it uses less digits than its factorization.

18342501849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17126549 (or 17126546 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 18342501849 in words is "eighteen billion, three hundred forty-two million, five hundred one thousand, eight hundred forty-nine".