6981489642 has 16 divisors (see below), whose sum is σ = 13968058752. Its totient is φ = 2326316640.

The previous prime is 6981489611. The next prime is 6981489649. The reversal of 6981489642 is 2469841896.

It is not an unprimeable number, because it can be changed into a prime (6981489649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193659 + ... + 226862.

It is an arithmetic number, because the mean of its divisors is an integer number (873003672).

Almost surely, 2^6981489642 is an apocalyptic number.

6981489642 is an abundant number, since it is smaller than the sum of its proper divisors (6986569110).

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

6981489642 is a wasteful number, since it uses less digits than its factorization.

6981489642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423293.

The product of its digits is 5971968, while the sum is 57.

The square root of 6981489642 is about 83555.3088798073. The cubic root of 6981489642 is about 1911.2435495296.

The spelling of 6981489642 in words is "six billion, nine hundred eighty-one million, four hundred eighty-nine thousand, six hundred forty-two".