6945642589 has 4 divisors (see below), whose sum is σ = 6946707456. Its totient is φ = 6944577724.

The previous prime is 6945642581. The next prime is 6945642619. The reversal of 6945642589 is 9852465496.

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.

It is a cyclic number.

It is not a de Polignac number, because 6945642589 - 2³ = 6945642581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945642581) 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, 522589 + ... + 535714.

It is an arithmetic number, because the mean of its divisors is an integer number (1736676864).

Almost surely, 2^6945642589 is an apocalyptic number.

It is an amenable number.

6945642589 is a deficient number, since it is larger than the sum of its proper divisors (1064867).

6945642589 is a wasteful number, since it uses less digits than its factorization.

6945642589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064866.

The product of its digits is 18662400, while the sum is 58.

The square root of 6945642589 is about 83340.5218906145. The cubic root of 6945642589 is about 1907.9667872636.

The spelling of 6945642589 in words is "six billion, nine hundred forty-five million, six hundred forty-two thousand, five hundred eighty-nine".