189281071 has 18 divisors (see below), whose sum is σ = 227932512. Its totient is φ = 156562560.

The previous prime is 189281041. The next prime is 189281087. The reversal of 189281071 is 170182981.

189281071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189281071 - 2⁷ = 189280943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189281071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189281041) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 536031 + ... + 536383.

Almost surely, 2^189281071 is an apocalyptic number.

189281071 is a deficient number, since it is larger than the sum of its proper divisors (38651441).

189281071 is an frugal number, since it uses more digits than its factorization.

189281071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 189281071 is about 13757.9457405530. The cubic root of 189281071 is about 574.1636951328.

The spelling of 189281071 in words is "one hundred eighty-nine million, two hundred eighty-one thousand, seventy-one".