18744901548 has 48 divisors (see below), whose sum is σ = 44728137216. Its totient is φ = 6108125760.

The previous prime is 18744901547. The next prime is 18744901559. The reversal of 18744901548 is 84510944781.

It is a self number, because there is not a number n which added to its sum of digits gives 18744901548.

It is not an unprimeable number, because it can be changed into a prime (18744901541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40765 + ... + 197867.

It is an arithmetic number, because the mean of its divisors is an integer number (931836192).

Almost surely, 2^18744901548 is an apocalyptic number.

It is an amenable number.

18744901548 is an abundant number, since it is smaller than the sum of its proper divisors (25983235668).

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

18744901548 is a wasteful number, since it uses less digits than its factorization.

18744901548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157334 (or 157332 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 18744901548 in words is "eighteen billion, seven hundred forty-four million, nine hundred one thousand, five hundred forty-eight".