18534429 has 6 divisors (see below), whose sum is σ = 26771966. Its totient is φ = 12356280.

The previous prime is 18534421. The next prime is 18534431. The reversal of 18534429 is 92443581.

It can be written as a sum of positive squares in only one way, i.e., 18507204 + 27225 = 4302^2 + 165^2 .

It is not a de Polignac number, because 18534429 - 2³ = 18534421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18534393 and 18534402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18534421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029682 + ... + 1029699.

Almost surely, 2^18534429 is an apocalyptic number.

It is an amenable number.

18534429 is a deficient number, since it is larger than the sum of its proper divisors (8237537).

18534429 is a wasteful number, since it uses less digits than its factorization.

18534429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059387 (or 2059384 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 18534429 is about 4305.1630631139. The cubic root of 18534429 is about 264.6425892508.

The spelling of 18534429 in words is "eighteen million, five hundred thirty-four thousand, four hundred twenty-nine".