18469441 has 2 divisors, whose sum is σ = 18469442. Its totient is φ = 18469440.

The previous prime is 18469439. The next prime is 18469453. The reversal of 18469441 is 14496481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16769025 + 1700416 = 4095^2 + 1304^2 .

It is an emirp because it is prime and its reverse (14496481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18469441 - 2¹ = 18469439 is a prime.

It is a super-2 number, since 2×18469441² = 682240501704962, which contains 22 as substring.

Together with 18469439, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18469441.

It is not a weakly prime, because it can be changed into another prime (18469411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234720 + 9234721.

It is an arithmetic number, because the mean of its divisors is an integer number (9234721).

Almost surely, 2^18469441 is an apocalyptic number.

It is an amenable number.

18469441 is a deficient number, since it is larger than the sum of its proper divisors (1).

18469441 is an equidigital number, since it uses as much as digits as its factorization.

18469441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 18469441 is about 4297.6087537141. The cubic root of 18469441 is about 264.3329181120.

The spelling of 18469441 in words is "eighteen million, four hundred sixty-nine thousand, four hundred forty-one".