18494785 has 4 divisors (see below), whose sum is σ = 22193748. Its totient is φ = 14795824.

The previous prime is 18494767. The next prime is 18494797. The reversal of 18494785 is 58749481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 10246401 = 2872^2 + 3201^2 .

It is a cyclic number.

It is not a de Polignac number, because 18494785 - 2¹⁷ = 18363713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1849474 + ... + 1849483.

It is an arithmetic number, because the mean of its divisors is an integer number (5548437).

Almost surely, 2^18494785 is an apocalyptic number.

It is an amenable number.

18494785 is a deficient number, since it is larger than the sum of its proper divisors (3698963).

18494785 is an equidigital number, since it uses as much as digits as its factorization.

18494785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698962.

The product of its digits is 322560, while the sum is 46.

The square root of 18494785 is about 4300.5563593563. The cubic root of 18494785 is about 264.4537698393.

The spelling of 18494785 in words is "eighteen million, four hundred ninety-four thousand, seven hundred eighty-five".