18948882844 has 24 divisors (see below), whose sum is σ = 33542812800. Its totient is φ = 9365283840.

The previous prime is 18948882829. The next prime is 18948882847. The reversal of 18948882844 is 44828884981.

It is a super-2 number, since 2×18948882844² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18948882847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1874997 + ... + 1885075.

It is an arithmetic number, because the mean of its divisors is an integer number (1397617200).

Almost surely, 2^18948882844 is an apocalyptic number.

It is an amenable number.

18948882844 is a deficient number, since it is larger than the sum of its proper divisors (14593929956).

18948882844 is a wasteful number, since it uses less digits than its factorization.

18948882844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453 (or 15451 counting only the distinct ones).

The product of its digits is 37748736, while the sum is 64.

The spelling of 18948882844 in words is "eighteen billion, nine hundred forty-eight million, eight hundred eighty-two thousand, eight hundred forty-four".