18462481 has 2 divisors, whose sum is σ = 18462482. Its totient is φ = 18462480.

The previous prime is 18462463. The next prime is 18462517. The reversal of 18462481 is 18426481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14561856 + 3900625 = 3816^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 18462481 - 2⁹ = 18461969 is a prime.

It is a super-2 number, since 2×18462481² = 681726409350722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18462401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9231240 + 9231241.

It is an arithmetic number, because the mean of its divisors is an integer number (9231241).

Almost surely, 2^18462481 is an apocalyptic number.

It is an amenable number.

18462481 is a deficient number, since it is larger than the sum of its proper divisors (1).

18462481 is an equidigital number, since it uses as much as digits as its factorization.

18462481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 34.

The square root of 18462481 is about 4296.7989247811. The cubic root of 18462481 is about 264.2997103166.

The spelling of 18462481 in words is "eighteen million, four hundred sixty-two thousand, four hundred eighty-one".