1992171 has 8 divisors (see below), whose sum is σ = 2664000. Its totient is φ = 1324232.

The previous prime is 1992167. The next prime is 1992181. The reversal of 1992171 is 1712991.

1992171 is nontrivially palindromic in base 9.

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

It is a cyclic number.

It is not a de Polignac number, because 1992171 - 2² = 1992167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1992101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (333000).

2^1992171 is an apocalyptic number.

1992171 is a deficient number, since it is larger than the sum of its proper divisors (671829).

1992171 is a wasteful number, since it uses less digits than its factorization.

1992171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945.

The product of its digits is 1134, while the sum is 30.

The square root of 1992171 is about 1411.4428787592. The cubic root of 1992171 is about 125.8274913105.

The spelling of 1992171 in words is "one million, nine hundred ninety-two thousand, one hundred seventy-one".