189433107 has 8 divisors (see below), whose sum is σ = 280641680. Its totient is φ = 126288720.

The previous prime is 189433099. The next prime is 189433109. The reversal of 189433107 is 701334981.

It is a happy number.

It is not a de Polignac number, because 189433107 - 2³ = 189433099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189433109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3507994 + ... + 3508047.

It is an arithmetic number, because the mean of its divisors is an integer number (35080210).

Almost surely, 2^189433107 is an apocalyptic number.

189433107 is a deficient number, since it is larger than the sum of its proper divisors (91208573).

189433107 is an equidigital number, since it uses as much as digits as its factorization.

189433107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016050 (or 7016044 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 189433107 is about 13763.4700203110. The cubic root of 189433107 is about 574.3173822559.

The spelling of 189433107 in words is "one hundred eighty-nine million, four hundred thirty-three thousand, one hundred seven".