18429412 has 6 divisors (see below), whose sum is σ = 32251478. Its totient is φ = 9214704.

The previous prime is 18429379. The next prime is 18429419. The reversal of 18429412 is 21492481.

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 8856576 = 3094^2 + 2976^2 .

It is not an unprimeable number, because it can be changed into a prime (18429419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2303673 + ... + 2303680.

Almost surely, 2^18429412 is an apocalyptic number.

It is an amenable number.

18429412 is a deficient number, since it is larger than the sum of its proper divisors (13822066).

18429412 is a wasteful number, since it uses less digits than its factorization.

18429412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607357 (or 4607355 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 18429412 is about 4292.9491028895. The cubic root of 18429412 is about 264.1418162141.

The spelling of 18429412 in words is "eighteen million, four hundred twenty-nine thousand, four hundred twelve".