189797267 has 4 divisors (see below), whose sum is σ = 207051576. Its totient is φ = 172542960.

The previous prime is 189797249. The next prime is 189797269. The reversal of 189797267 is 762797981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 762797981 = 11 ⋅69345271.

It is a cyclic number.

It is not a de Polignac number, because 189797267 - 2⁶ = 189797203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189797269) 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, 8627138 + ... + 8627159.

It is an arithmetic number, because the mean of its divisors is an integer number (51762894).

Almost surely, 2^189797267 is an apocalyptic number.

189797267 is a deficient number, since it is larger than the sum of its proper divisors (17254309).

189797267 is a wasteful number, since it uses less digits than its factorization.

189797267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17254308.

The product of its digits is 2667168, while the sum is 56.

The square root of 189797267 is about 13776.6928905307. The cubic root of 189797267 is about 574.6851629945.

The spelling of 189797267 in words is "one hundred eighty-nine million, seven hundred ninety-seven thousand, two hundred sixty-seven".