18886241 has 4 divisors (see below), whose sum is σ = 20603184. Its totient is φ = 17169300.

The previous prime is 18886229. The next prime is 18886253. The reversal of 18886241 is 14268881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14268881 = 11 ⋅1297171.

It is an interprime number because it is at equal distance from previous prime (18886229) and next prime (18886253).

It is a cyclic number.

It is not a de Polignac number, because 18886241 - 2⁶ = 18886177 is a prime.

It is a super-2 number, since 2×18886241² = 713380198220162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18886195 and 18886204.

It is not an unprimeable number, because it can be changed into a prime (18886211) 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, 858455 + ... + 858476.

It is an arithmetic number, because the mean of its divisors is an integer number (5150796).

Almost surely, 2^18886241 is an apocalyptic number.

18886241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18886241 is a deficient number, since it is larger than the sum of its proper divisors (1716943).

18886241 is a wasteful number, since it uses less digits than its factorization.

18886241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716942.

The product of its digits is 24576, while the sum is 38.

The square root of 18886241 is about 4345.8303004144. The cubic root of 18886241 is about 266.3065463593.

The spelling of 18886241 in words is "eighteen million, eight hundred eighty-six thousand, two hundred forty-one".