18841012 has 6 divisors (see below), whose sum is σ = 32971778. Its totient is φ = 9420504.

The previous prime is 18840967. The next prime is 18841019. The reversal of 18841012 is 21014881.

It can be written as a sum of positive squares in only one way, i.e., 18714276 + 126736 = 4326^2 + 356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18841019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2355123 + ... + 2355130.

Almost surely, 2^18841012 is an apocalyptic number.

It is an amenable number.

18841012 is a deficient number, since it is larger than the sum of its proper divisors (14130766).

18841012 is a wasteful number, since it uses less digits than its factorization.

18841012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710257 (or 4710255 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18841012 is about 4340.6234575231. The cubic root of 18841012 is about 266.0937917126.

Adding to 18841012 its reverse (21014881), we get a palindrome (39855893).

The spelling of 18841012 in words is "eighteen million, eight hundred forty-one thousand, twelve".