6944513889 has 32 divisors (see below), whose sum is σ = 10560084480. Its totient is φ = 4031983872.

The previous prime is 6944513861. The next prime is 6944513899. The reversal of 6944513889 is 9883154496.

It is not a de Polignac number, because 6944513889 - 2⁷ = 6944513761 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (6944513899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41667 + ... + 125000.

It is an arithmetic number, because the mean of its divisors is an integer number (330002640).

Almost surely, 2^6944513889 is an apocalyptic number.

It is an amenable number.

6944513889 is a deficient number, since it is larger than the sum of its proper divisors (3615570591).

6944513889 is a wasteful number, since it uses less digits than its factorization.

6944513889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166749.

The product of its digits is 7464960, while the sum is 57.

The square root of 6944513889 is about 83333.7499996250. The cubic root of 6944513889 is about 1907.8634304348.

The spelling of 6944513889 in words is "six billion, nine hundred forty-four million, five hundred thirteen thousand, eight hundred eighty-nine".