18492481 has 8 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 14918208.

The previous prime is 18492457. The next prime is 18492497. The reversal of 18492481 is 18429481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18492481 - 2⁹ = 18491969 is a prime.

It is a super-2 number, since 2×18492481² = 683943707070722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18492481.

It is not an unprimeable number, because it can be changed into a prime (18492431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77581 + ... + 77818.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^18492481 is an apocalyptic number.

It is an amenable number.

18492481 is a deficient number, since it is larger than the sum of its proper divisors (3885119).

18492481 is a wasteful number, since it uses less digits than its factorization.

18492481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155423.

The product of its digits is 18432, while the sum is 37.

The square root of 18492481 is about 4300.2884786954. The cubic root of 18492481 is about 264.4427878826.

It can be divided in two parts, 184 and 92481, that added together give a triangular number (92665 = T₄₃₀).

The spelling of 18492481 in words is "eighteen million, four hundred ninety-two thousand, four hundred eighty-one".