18291429 has 24 divisors (see below), whose sum is σ = 28700672. Its totient is φ = 11158560.

The previous prime is 18291419. The next prime is 18291437. The reversal of 18291429 is 92419281.

It is not a de Polignac number, because 18291429 - 2⁵ = 18291397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18291393 and 18291402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18291419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14244 + ... + 15474.

Almost surely, 2^18291429 is an apocalyptic number.

It is an amenable number.

18291429 is a deficient number, since it is larger than the sum of its proper divisors (10409243).

18291429 is a wasteful number, since it uses less digits than its factorization.

18291429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1374 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 18291429 is about 4276.8480216159. The cubic root of 18291429 is about 263.4809446762.

The spelling of 18291429 in words is "eighteen million, two hundred ninety-one thousand, four hundred twenty-nine".