189237697 has 4 divisors (see below), whose sum is σ = 206441136. Its totient is φ = 172034260.

The previous prime is 189237691. The next prime is 189237703. The reversal of 189237697 is 796732981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796732981 = 11 ⋅72430271.

It is an interprime number because it is at equal distance from previous prime (189237691) and next prime (189237703).

It is a cyclic number.

It is not a de Polignac number, because 189237697 - 2¹⁵ = 189204929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189237691) 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 3 ways as a sum of consecutive naturals, for example, 8601703 + ... + 8601724.

It is an arithmetic number, because the mean of its divisors is an integer number (51610284).

Almost surely, 2^189237697 is an apocalyptic number.

It is an amenable number.

189237697 is a deficient number, since it is larger than the sum of its proper divisors (17203439).

189237697 is a wasteful number, since it uses less digits than its factorization.

189237697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17203438.

The product of its digits is 1143072, while the sum is 52.

The square root of 189237697 is about 13756.3693247892. The cubic root of 189237697 is about 574.1198350002.

The spelling of 189237697 in words is "one hundred eighty-nine million, two hundred thirty-seven thousand, six hundred ninety-seven".