2709731980 has 24 divisors (see below), whose sum is σ = 5724518688. Its totient is φ = 1077401088.

The previous prime is 2709731951. The next prime is 2709731993. The reversal of 2709731980 is 891379072.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2709731980.

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 7 ways as a sum of consecutive naturals, for example, 402309 + ... + 408988.

It is an arithmetic number, because the mean of its divisors is an integer number (238521612).

Almost surely, 2^2709731980 is an apocalyptic number.

2709731980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2709731980 is an abundant number, since it is smaller than the sum of its proper divisors (3014786708).

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

2709731980 is a wasteful number, since it uses less digits than its factorization.

2709731980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811473 (or 811471 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 2709731980 is about 52055.0860147210. The cubic root of 2709731980 is about 1394.1476754574.

The spelling of 2709731980 in words is "two billion, seven hundred nine million, seven hundred thirty-one thousand, nine hundred eighty".