189873967 has 8 divisors (see below), whose sum is σ = 192011600. Its totient is φ = 187743744.

The previous prime is 189873953. The next prime is 189873997. The reversal of 189873967 is 769378981.

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 189873967 - 2¹¹ = 189871919 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 (189873997) 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, 61384 + ... + 64402.

It is an arithmetic number, because the mean of its divisors is an integer number (24001450).

Almost surely, 2^189873967 is an apocalyptic number.

189873967 is a deficient number, since it is larger than the sum of its proper divisors (2137633).

189873967 is a wasteful number, since it uses less digits than its factorization.

189873967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705.

The product of its digits is 4572288, while the sum is 58.

The square root of 189873967 is about 13779.4762962893. The cubic root of 189873967 is about 574.7625656120.

The spelling of 189873967 in words is "one hundred eighty-nine million, eight hundred seventy-three thousand, nine hundred sixty-seven".