18422481 has 24 divisors (see below), whose sum is σ = 31173984. Its totient is φ = 9569280.

The previous prime is 18422479. The next prime is 18422483.

18422481 = 589² + 590² + ... + 637².

18422481 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (18422479) and next prime (18422483).

It is not a de Polignac number, because 18422481 - 2¹ = 18422479 is a prime.

It is a super-2 number, since 2×18422481² = 678775612390722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18422483) 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 23 ways as a sum of consecutive naturals, for example, 4080 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (1298916).

Almost surely, 2^18422481 is an apocalyptic number.

18422481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18422481 is a deficient number, since it is larger than the sum of its proper divisors (12751503).

18422481 is a wasteful number, since it uses less digits than its factorization.

18422481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421 (or 11414 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 18422481 is about 4292.1417730546. The cubic root of 18422481 is about 264.1086989252.

The spelling of 18422481 in words is "eighteen million, four hundred twenty-two thousand, four hundred eighty-one".