2781693020 has 24 divisors (see below), whose sum is σ = 5883586800. Its totient is φ = 1104671232.

The previous prime is 2781693007. The next prime is 2781693049. The reversal of 2781693020 is 203961872.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497525 + ... + 503084.

It is an arithmetic number, because the mean of its divisors is an integer number (245149450).

Almost surely, 2^2781693020 is an apocalyptic number.

2781693020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2781693020 is an abundant number, since it is smaller than the sum of its proper divisors (3101893780).

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

2781693020 is a wasteful number, since it uses less digits than its factorization.

2781693020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000757 (or 1000755 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2781693020 is about 52741.7578394956. The cubic root of 2781693020 is about 1406.3812474176.

The spelling of 2781693020 in words is "two billion, seven hundred eighty-one million, six hundred ninety-three thousand, twenty".