18407429212 has 12 divisors (see below), whose sum is σ = 32226603976. Its totient is φ = 9199828080.

The previous prime is 18407429179. The next prime is 18407429251. The reversal of 18407429212 is 21292470481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960963 + ... + 979930.

Almost surely, 2^18407429212 is an apocalyptic number.

It is an amenable number.

18407429212 is a deficient number, since it is larger than the sum of its proper divisors (13819174764).

18407429212 is a wasteful number, since it uses less digits than its factorization.

18407429212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943268 (or 1943266 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

Adding to 18407429212 its reverse (21292470481), we get a palindrome (39699899693).

The spelling of 18407429212 in words is "eighteen billion, four hundred seven million, four hundred twenty-nine thousand, two hundred twelve".