189021167 has 12 divisors (see below), whose sum is σ = 197822016. Its totient is φ = 180423360.

The previous prime is 189021143. The next prime is 189021211. The reversal of 189021167 is 761120981.

It is not a de Polignac number, because 189021167 - 2⁶ = 189021103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189021067) 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 11 ways as a sum of consecutive naturals, for example, 192983 + ... + 193959.

It is an arithmetic number, because the mean of its divisors is an integer number (16485168).

Almost surely, 2^189021167 is an apocalyptic number.

189021167 is a deficient number, since it is larger than the sum of its proper divisors (8800849).

189021167 is an frugal number, since it uses more digits than its factorization.

189021167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 189021167 is about 13748.4968996614. The cubic root of 189021167 is about 573.9007778491.

The spelling of 189021167 in words is "one hundred eighty-nine million, twenty-one thousand, one hundred sixty-seven".