18203699148 has 12 divisors (see below), whose sum is σ = 42475298040. Its totient is φ = 6067899712.

The previous prime is 18203699147. The next prime is 18203699167. The reversal of 18203699148 is 84199630281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18203699148.

It is not an unprimeable number, because it can be changed into a prime (18203699147) 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 3 ways as a sum of consecutive naturals, for example, 758487453 + ... + 758487476.

It is an arithmetic number, because the mean of its divisors is an integer number (3539608170).

Almost surely, 2^18203699148 is an apocalyptic number.

It is an amenable number.

18203699148 is an abundant number, since it is smaller than the sum of its proper divisors (24271598892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18203699148 is a wasteful number, since it uses less digits than its factorization.

18203699148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516974936 (or 1516974934 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 18203699148 in words is "eighteen billion, two hundred three million, six hundred ninety-nine thousand, one hundred forty-eight".