18435440848 has 40 divisors (see below), whose sum is σ = 38974219776. Its totient is φ = 8377939200.

The previous prime is 18435440843. The next prime is 18435440857. The reversal of 18435440848 is 84804453481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18435440843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139665 + ... + 1155727.

Almost surely, 2^18435440848 is an apocalyptic number.

It is an amenable number.

18435440848 is an abundant number, since it is smaller than the sum of its proper divisors (20538778928).

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

18435440848 is a wasteful number, since it uses less digits than its factorization.

18435440848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22603 (or 22597 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 49.

The spelling of 18435440848 in words is "eighteen billion, four hundred thirty-five million, four hundred forty thousand, eight hundred forty-eight".