18147906 has 24 divisors (see below), whose sum is σ = 44937984. Its totient is φ = 5185080.

The previous prime is 18147893. The next prime is 18147917. The reversal of 18147906 is 60974181.

18147906 is a `hidden beast` number, since 181 + 479 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71890 + ... + 72141.

It is an arithmetic number, because the mean of its divisors is an integer number (1872416).

Almost surely, 2^18147906 is an apocalyptic number.

18147906 is an abundant number, since it is smaller than the sum of its proper divisors (26790078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18147906 is a wasteful number, since it uses less digits than its factorization.

18147906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144046 (or 144043 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 18147906 is about 4260.0359153416. The cubic root of 18147906 is about 262.7900033033.

The spelling of 18147906 in words is "eighteen million, one hundred forty-seven thousand, nine hundred six".