18534069 has 16 divisors (see below), whose sum is σ = 27575040. Its totient is φ = 12303360.

The previous prime is 18534059. The next prime is 18534073. The reversal of 18534069 is 96043581.

It is not a de Polignac number, because 18534069 - 2²⁰ = 17485493 is a prime.

It is a super-2 number, since 2×18534069² = 687023427393522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18534049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5604 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (1723440).

Almost surely, 2^18534069 is an apocalyptic number.

It is an amenable number.

18534069 is a deficient number, since it is larger than the sum of its proper divisors (9040971).

18534069 is a wasteful number, since it uses less digits than its factorization.

18534069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18534069 is about 4305.1212526478. The cubic root of 18534069 is about 264.6408758278.

The spelling of 18534069 in words is "eighteen million, five hundred thirty-four thousand, sixty-nine".