189077907 has 8 divisors (see below), whose sum is σ = 252313600. Its totient is φ = 125947080.

The previous prime is 189077887. The next prime is 189077921. The reversal of 189077907 is 709770981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189077907 - 2⁶ = 189077843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189078907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21907 + ... + 29292.

It is an arithmetic number, because the mean of its divisors is an integer number (31539200).

Almost surely, 2^189077907 is an apocalyptic number.

189077907 is a deficient number, since it is larger than the sum of its proper divisors (63235693).

189077907 is a wasteful number, since it uses less digits than its factorization.

189077907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52433.

The product of its (nonzero) digits is 222264, while the sum is 48.

The square root of 189077907 is about 13750.5602431319. The cubic root of 189077907 is about 573.9581962376.

It can be divided in two parts, 1890 and 77907, that added together give a palindrome (79797).

The spelling of 189077907 in words is "one hundred eighty-nine million, seventy-seven thousand, nine hundred seven".