166153906 has 8 divisors (see below), whose sum is σ = 252385920. Its totient is φ = 82025268.

The previous prime is 166153877. The next prime is 166153921. The reversal of 166153906 is 609351661.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 525646 + ... + 525961.

It is an arithmetic number, because the mean of its divisors is an integer number (31548240).

Almost surely, 2^166153906 is an apocalyptic number.

166153906 is a deficient number, since it is larger than the sum of its proper divisors (86232014).

166153906 is a wasteful number, since it uses less digits than its factorization.

166153906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051688.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 166153906 is about 12890.0700541153. The cubic root of 166153906 is about 549.7562622492.

The spelling of 166153906 in words is "one hundred sixty-six million, one hundred fifty-three thousand, nine hundred six".