18484641 has 24 divisors (see below), whose sum is σ = 31037760. Its totient is φ = 10381536.

The previous prime is 18484621. The next prime is 18484643. The reversal of 18484641 is 14648481.

18484641 is a `hidden beast` number, since 1 + 8 + 4 + 8 + 4 + 641 = 666.

It is not a de Polignac number, because 18484641 - 2⁹ = 18484129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18484596 and 18484605.

It is not an unprimeable number, because it can be changed into a prime (18484643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1231 + ... + 6203.

It is an arithmetic number, because the mean of its divisors is an integer number (1293240).

Almost surely, 2^18484641 is an apocalyptic number.

It is an amenable number.

18484641 is a deficient number, since it is larger than the sum of its proper divisors (12553119).

18484641 is a wasteful number, since it uses less digits than its factorization.

18484641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045 (or 5042 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 18484641 is about 4299.3768153071. The cubic root of 18484641 is about 264.4054118897.

The spelling of 18484641 in words is "eighteen million, four hundred eighty-four thousand, six hundred forty-one".