18884061 has 18 divisors (see below), whose sum is σ = 31731102. Its totient is φ = 10790640.

The previous prime is 18884051. The next prime is 18884101. The reversal of 18884061 is 16048881.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 7452900 = 3381^2 + 2730^2 .

It is not a de Polignac number, because 18884061 - 2⁵ = 18884029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18884051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20970 + ... + 21851.

It is an arithmetic number, because the mean of its divisors is an integer number (1762839).

Almost surely, 2^18884061 is an apocalyptic number.

It is an amenable number.

18884061 is a deficient number, since it is larger than the sum of its proper divisors (12847041).

18884061 is a wasteful number, since it uses less digits than its factorization.

18884061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42841 (or 42831 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 18884061 is about 4345.5794780443. The cubic root of 18884061 is about 266.2962995592.

The spelling of 18884061 in words is "eighteen million, eight hundred eighty-four thousand, sixty-one".