1001605166 has 8 divisors (see below), whose sum is σ = 1516994544. Its totient is φ = 495940320.

The previous prime is 1001605153. The next prime is 1001605211. The reversal of 1001605166 is 6615061001.

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

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, 2430875 + ... + 2431286.

It is an arithmetic number, because the mean of its divisors is an integer number (189624318).

Almost surely, 2^1001605166 is an apocalyptic number.

1001605166 is a deficient number, since it is larger than the sum of its proper divisors (515389378).

1001605166 is a wasteful number, since it uses less digits than its factorization.

1001605166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4862266.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1001605166 is about 31648.1463280237. The cubic root of 1001605166 is about 1000.5347693041.

Adding to 1001605166 its reverse (6615061001), we get a palindrome (7616666167).

The spelling of 1001605166 in words is "one billion, one million, six hundred five thousand, one hundred sixty-six".