18884948 has 12 divisors (see below), whose sum is σ = 33942132. Its totient is φ = 9187200.

The previous prime is 18884941. The next prime is 18884951. The reversal of 18884948 is 84948881.

It can be written as a sum of positive squares in 2 ways, for example, as 14227984 + 4656964 = 3772^2 + 2158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18884896 and 18884905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18884941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63653 + ... + 63948.

It is an arithmetic number, because the mean of its divisors is an integer number (2828511).

Almost surely, 2^18884948 is an apocalyptic number.

It is an amenable number.

18884948 is a deficient number, since it is larger than the sum of its proper divisors (15057184).

18884948 is a wasteful number, since it uses less digits than its factorization.

18884948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127642 (or 127640 counting only the distinct ones).

The product of its digits is 589824, while the sum is 50.

The square root of 18884948 is about 4345.6815345812. The cubic root of 18884948 is about 266.3004688799.

The spelling of 18884948 in words is "eighteen million, eight hundred eighty-four thousand, nine hundred forty-eight".