18494069 has 4 divisors (see below), whose sum is σ = 20175360. Its totient is φ = 16812780.

The previous prime is 18494057. The next prime is 18494123. The reversal of 18494069 is 96049481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18494069 - 2⁴ = 18494053 is a prime.

It is a super-2 number, since 2×18494069² = 684061176353522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18499069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840629 + ... + 840650.

It is an arithmetic number, because the mean of its divisors is an integer number (5043840).

Almost surely, 2^18494069 is an apocalyptic number.

It is an amenable number.

18494069 is a deficient number, since it is larger than the sum of its proper divisors (1681291).

18494069 is a wasteful number, since it uses less digits than its factorization.

18494069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681290.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18494069 is about 4300.4731135074. The cubic root of 18494069 is about 264.4503571414.

The spelling of 18494069 in words is "eighteen million, four hundred ninety-four thousand, sixty-nine".