6894453888 has 128 divisors (see below), whose sum is σ = 23255184000. Its totient is φ = 1969837056.

The previous prime is 6894453859. The next prime is 6894453911. The reversal of 6894453888 is 8883544986.

6894453888 is a `hidden beast` number, since 6 + 8 + 94 + 4 + 538 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118303 + ... + 166686.

It is an arithmetic number, because the mean of its divisors is an integer number (181681125).

Almost surely, 2^6894453888 is an apocalyptic number.

It is an amenable number.

6894453888 is an abundant number, since it is smaller than the sum of its proper divisors (16360730112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6894453888 is a wasteful number, since it uses less digits than its factorization.

6894453888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285019 (or 285001 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 63.

The square root of 6894453888 is about 83032.8482469438. The cubic root of 6894453888 is about 1903.2680495157.

The spelling of 6894453888 in words is "six billion, eight hundred ninety-four million, four hundred fifty-three thousand, eight hundred eighty-eight".