2781130993 has 16 divisors (see below), whose sum is σ = 2897556480. Its totient is φ = 2666491200.

The previous prime is 2781130991. The next prime is 2781131009. The reversal of 2781130993 is 3990311872.

It is a cyclic number.

It is not a de Polignac number, because 2781130993 - 2¹ = 2781130991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781130991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2013163 + ... + 2014543.

It is an arithmetic number, because the mean of its divisors is an integer number (181097280).

Almost surely, 2^2781130993 is an apocalyptic number.

It is an amenable number.

2781130993 is a deficient number, since it is larger than the sum of its proper divisors (116425487).

2781130993 is a wasteful number, since it uses less digits than its factorization.

2781130993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 2781130993 is about 52736.4294676839. The cubic root of 2781130993 is about 1406.2865236328.

The spelling of 2781130993 in words is "two billion, seven hundred eighty-one million, one hundred thirty thousand, nine hundred ninety-three".