2145880567 has 4 divisors (see below), whose sum is σ = 2160282600. Its totient is φ = 2131478536.

The previous prime is 2145880537. The next prime is 2145880571. The reversal of 2145880567 is 7650885412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145880567 - 2⁷ = 2145880439 is a prime.

It is a super-4 number, since 4×2145880567⁴ (a number of 38 digits) contains 4444 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 (2145880537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7200793 + ... + 7201090.

It is an arithmetic number, because the mean of its divisors is an integer number (540070650).

Almost surely, 2^2145880567 is an apocalyptic number.

2145880567 is a deficient number, since it is larger than the sum of its proper divisors (14402033).

2145880567 is a wasteful number, since it uses less digits than its factorization.

2145880567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14402032.

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 2145880567 is about 46323.6501908043. The cubic root of 2145880567 is about 1289.8380436862.

The spelling of 2145880567 in words is "two billion, one hundred forty-five million, eight hundred eighty thousand, five hundred sixty-seven".