189381067 has 4 divisors (see below), whose sum is σ = 190826856. Its totient is φ = 187935280.

The previous prime is 189381047. The next prime is 189381079. The reversal of 189381067 is 760183981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189381067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189381047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722698 + ... + 722959.

It is an arithmetic number, because the mean of its divisors is an integer number (47706714).

Almost surely, 2^189381067 is an apocalyptic number.

189381067 is a deficient number, since it is larger than the sum of its proper divisors (1445789).

189381067 is a wasteful number, since it uses less digits than its factorization.

189381067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445788.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 189381067 is about 13761.5793788358. The cubic root of 189381067 is about 574.2647863566.

The spelling of 189381067 in words is "one hundred eighty-nine million, three hundred eighty-one thousand, sixty-seven".