6981458420 has 36 divisors (see below), whose sum is σ = 15473325924. Its totient is φ = 2645602560.

The previous prime is 6981458399. The next prime is 6981458437. The reversal of 6981458420 is 248541896.

It can be written as a sum of positive squares in 2 ways, for example, as 5098245604 + 1883212816 = 71402^2 + 43396^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 476261 + ... + 490700.

It is an arithmetic number, because the mean of its divisors is an integer number (429814609).

Almost surely, 2^6981458420 is an apocalyptic number.

It is an amenable number.

6981458420 is an abundant number, since it is smaller than the sum of its proper divisors (8491867504).

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

6981458420 is a wasteful number, since it uses less digits than its factorization.

6981458420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967008 (or 966987 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 6981458420 is about 83555.1220452702. The cubic root of 6981458420 is about 1911.2407004273.

The spelling of 6981458420 in words is "six billion, nine hundred eighty-one million, four hundred fifty-eight thousand, four hundred twenty".