1808214172 has 12 divisors (see below), whose sum is σ = 3167200456. Its totient is φ = 903299760.

The previous prime is 1808214169. The next prime is 1808214203. The reversal of 1808214172 is 2714128081.

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, 196779 + ... + 205762.

Almost surely, 2^1808214172 is an apocalyptic number.

It is an amenable number.

1808214172 is a deficient number, since it is larger than the sum of its proper divisors (1358986284).

1808214172 is a wasteful number, since it uses less digits than its factorization.

1808214172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403668 (or 403666 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 1808214172 is about 42523.1016272332. The cubic root of 1808214172 is about 1218.2879712898.

The spelling of 1808214172 in words is "one billion, eight hundred eight million, two hundred fourteen thousand, one hundred seventy-two".