6945145887 has 8 divisors (see below), whose sum is σ = 9265135536. Its totient is φ = 4627626752.

The previous prime is 6945145873. The next prime is 6945145951. The reversal of 6945145887 is 7885415496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6945145887 - 2⁴ = 6945145871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945145807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611058 + ... + 622319.

It is an arithmetic number, because the mean of its divisors is an integer number (1158141942).

Almost surely, 2^6945145887 is an apocalyptic number.

6945145887 is a deficient number, since it is larger than the sum of its proper divisors (2319989649).

6945145887 is a wasteful number, since it uses less digits than its factorization.

6945145887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235257.

The product of its digits is 9676800, while the sum is 57.

The square root of 6945145887 is about 83337.5418823954. The cubic root of 6945145887 is about 1907.9213048623.

The spelling of 6945145887 in words is "six billion, nine hundred forty-five million, one hundred forty-five thousand, eight hundred eighty-seven".