18848544099 has 32 divisors (see below), whose sum is σ = 31350902784. Its totient is φ = 9785746080.

The previous prime is 18848544083. The next prime is 18848544101. The reversal of 18848544099 is 99044584881.

It is a Cunningham number, because it is equal to 137290²-1.

It is not a de Polignac number, because 18848544099 - 2⁴ = 18848544083 is a prime.

It is a super-2 number, since 2×18848544099² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18848544059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388992 + ... + 434754.

It is an arithmetic number, because the mean of its divisors is an integer number (979715712).

Almost surely, 2^18848544099 is an apocalyptic number.

18848544099 is a deficient number, since it is larger than the sum of its proper divisors (12502358685).

18848544099 is a wasteful number, since it uses less digits than its factorization.

18848544099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47567.

The product of its (nonzero) digits is 13271040, while the sum is 60.

The spelling of 18848544099 in words is "eighteen billion, eight hundred forty-eight million, five hundred forty-four thousand, ninety-nine".