189702171 has 12 divisors (see below), whose sum is σ = 275697448. Its totient is φ = 125691264.

The previous prime is 189702151. The next prime is 189702193. The reversal of 189702171 is 171207981.

It is not a de Polignac number, because 189702171 - 2⁷ = 189702043 is a prime.

It is a super-2 number, since 2×189702171² = 71973827364226482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189702151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63190 + ... + 66123.

Almost surely, 2^189702171 is an apocalyptic number.

189702171 is a deficient number, since it is larger than the sum of its proper divisors (85995277).

189702171 is a wasteful number, since it uses less digits than its factorization.

189702171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129482 (or 129479 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 189702171 is about 13773.2411218275. The cubic root of 189702171 is about 574.5891668983.

The spelling of 189702171 in words is "one hundred eighty-nine million, seven hundred two thousand, one hundred seventy-one".