18414261 has 6 divisors (see below), whose sum is σ = 26598390. Its totient is φ = 12276168.

The previous prime is 18414259. The next prime is 18414269. The reversal of 18414261 is 16241481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 6922161 = 3390^2 + 2631^2 .

It is not a de Polignac number, because 18414261 - 2¹ = 18414259 is a prime.

It is a super-2 number, since 2×18414261² = 678170016352242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18414269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1023006 + ... + 1023023.

It is an arithmetic number, because the mean of its divisors is an integer number (4433065).

Almost surely, 2^18414261 is an apocalyptic number.

It is an amenable number.

18414261 is a deficient number, since it is larger than the sum of its proper divisors (8184129).

18414261 is a wasteful number, since it uses less digits than its factorization.

18414261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046035 (or 2046032 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 18414261 is about 4291.1841023195. The cubic root of 18414261 is about 264.0694118448.

The spelling of 18414261 in words is "eighteen million, four hundred fourteen thousand, two hundred sixty-one".