2781948308 has 72 divisors (see below), whose sum is σ = 5489326080. Its totient is φ = 1230707520.

The previous prime is 2781948293. The next prime is 2781948317. The reversal of 2781948308 is 8038491872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297085 + ... + 1299227.

It is an arithmetic number, because the mean of its divisors is an integer number (76240640).

Almost surely, 2^2781948308 is an apocalyptic number.

It is an amenable number.

2781948308 is a deficient number, since it is larger than the sum of its proper divisors (2707377772).

2781948308 is a wasteful number, since it uses less digits than its factorization.

2781948308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 2781948308 is about 52744.1779535903. The cubic root of 2781948308 is about 1406.4242693315.

The spelling of 2781948308 in words is "two billion, seven hundred eighty-one million, nine hundred forty-eight thousand, three hundred eight".