6981539740 has 48 divisors (see below), whose sum is σ = 17637580800. Its totient is φ = 2267687232.

The previous prime is 6981539713. The next prime is 6981539777. The reversal of 6981539740 is 479351896.

It is a happy number.

It is a congruent number.

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, 1309660 + ... + 1314979.

It is an arithmetic number, because the mean of its divisors is an integer number (367449600).

Almost surely, 2^6981539740 is an apocalyptic number.

It is an amenable number.

6981539740 is an abundant number, since it is smaller than the sum of its proper divisors (10656041060).

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

6981539740 is a wasteful number, since it uses less digits than its factorization.

6981539740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624674 (or 2624672 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 6981539740 is about 83555.6086687183. The cubic root of 6981539740 is about 1911.2481211065.

The spelling of 6981539740 in words is "six billion, nine hundred eighty-one million, five hundred thirty-nine thousand, seven hundred forty".