189198667 has 16 divisors (see below), whose sum is σ = 230883840. Its totient is φ = 151506432.

The previous prime is 189198619. The next prime is 189198677. The reversal of 189198667 is 766891981.

It is not a de Polignac number, because 189198667 - 2⁷ = 189198539 is a prime.

It is a super-2 number, since 2×189198667² = 71592271189153778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189198677) 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, 6742 + ... + 20587.

It is an arithmetic number, because the mean of its divisors is an integer number (14430240).

Almost surely, 2^189198667 is an apocalyptic number.

189198667 is a deficient number, since it is larger than the sum of its proper divisors (41685173).

189198667 is a wasteful number, since it uses less digits than its factorization.

189198667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27402.

The product of its digits is 1306368, while the sum is 55.

The square root of 189198667 is about 13754.9506360437. The cubic root of 189198667 is about 574.0803618258.

The spelling of 189198667 in words is "one hundred eighty-nine million, one hundred ninety-eight thousand, six hundred sixty-seven".