18895940 has 48 divisors (see below), whose sum is σ = 46013184. Its totient is φ = 6384000.

The previous prime is 18895901. The next prime is 18895951. The reversal of 18895940 is 4959881.

It is a junction number, because it is equal to n+sod(n) for n = 18895891 and 18895900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8990 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (958608).

Almost surely, 2^18895940 is an apocalyptic number.

18895940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18895940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23006592).

18895940 is an abundant number, since it is smaller than the sum of its proper divisors (27117244).

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

18895940 is a wasteful number, since it uses less digits than its factorization.

18895940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 18895940 is about 4346.9460544157. The cubic root of 18895940 is about 266.3521256635.

The spelling of 18895940 in words is "eighteen million, eight hundred ninety-five thousand, nine hundred forty".