189831340567 has 4 divisors (see below), whose sum is σ = 207088735176. Its totient is φ = 172573945960.

The previous prime is 189831340511. The next prime is 189831340637. The reversal of 189831340567 is 765043138981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765043138981 = 11 ⋅69549376271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189831340567 is a prime.

It is a super-2 number, since 2×189831340567² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189831349567) 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 3 ways as a sum of consecutive naturals, for example, 8628697288 + ... + 8628697309.

It is an arithmetic number, because the mean of its divisors is an integer number (51772183794).

Almost surely, 2^189831340567 is an apocalyptic number.

189831340567 is a deficient number, since it is larger than the sum of its proper divisors (17257394609).

189831340567 is a wasteful number, since it uses less digits than its factorization.

189831340567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17257394608.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 189831340567 in words is "one hundred eighty-nine billion, eight hundred thirty-one million, three hundred forty thousand, five hundred sixty-seven".