189155071 has 8 divisors (see below), whose sum is σ = 218276864. Its totient is φ = 160558200.

The previous prime is 189155069. The next prime is 189155093. The reversal of 189155071 is 170551981.

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 189155071 - 2¹ = 189155069 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 189155071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189155041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130455 + ... + 131896.

It is an arithmetic number, because the mean of its divisors is an integer number (27284608).

Almost surely, 2^189155071 is an apocalyptic number.

189155071 is a deficient number, since it is larger than the sum of its proper divisors (29121793).

189155071 is a wasteful number, since it uses less digits than its factorization.

189155071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262461.

The product of its (nonzero) digits is 12600, while the sum is 37.

The square root of 189155071 is about 13753.3658062309. The cubic root of 189155071 is about 574.0362643868.

The spelling of 189155071 in words is "one hundred eighty-nine million, one hundred fifty-five thousand, seventy-one".