189549129 has 16 divisors (see below), whose sum is σ = 315095040. Its totient is φ = 98466960.

The previous prime is 189549103. The next prime is 189549131. The reversal of 189549129 is 921945981.

It is not a de Polignac number, because 189549129 - 2⁷ = 189549001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189549169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410049 + ... + 410510.

It is an arithmetic number, because the mean of its divisors is an integer number (19693440).

Almost surely, 2^189549129 is an apocalyptic number.

It is an amenable number.

189549129 is a deficient number, since it is larger than the sum of its proper divisors (125545911).

189549129 is a wasteful number, since it uses less digits than its factorization.

189549129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820580.

The product of its digits is 233280, while the sum is 48.

The square root of 189549129 is about 13767.6842279303. The cubic root of 189549129 is about 574.4346089528.

The spelling of 189549129 in words is "one hundred eighty-nine million, five hundred forty-nine thousand, one hundred twenty-nine".