18547840950 has 48 divisors (see below), whose sum is σ = 47482484736. Its totient is φ = 4786538400.

The previous prime is 18547840933. The next prime is 18547840951. The reversal of 18547840950 is 5904874581.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18547840893 and 18547840902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18547840951) 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, 1989742 + ... + 1999041.

It is an arithmetic number, because the mean of its divisors is an integer number (989218432).

Almost surely, 2^18547840950 is an apocalyptic number.

18547840950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18547840950 is an abundant number, since it is smaller than the sum of its proper divisors (28934643786).

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

18547840950 is a wasteful number, since it uses less digits than its factorization.

18547840950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988829 (or 3988824 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 18547840950 in words is "eighteen billion, five hundred forty-seven million, eight hundred forty thousand, nine hundred fifty".