2878964781 has 16 divisors (see below), whose sum is σ = 4785811968. Its totient is φ = 1495566000.

The previous prime is 2878964779. The next prime is 2878964827. The reversal of 2878964781 is 1874698782.

It is not a de Polignac number, because 2878964781 - 2¹ = 2878964779 is a prime.

It is a super-2 number, since 2×2878964781² = 16576876420476755922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878964731) 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, 6231295 + ... + 6231756.

It is an arithmetic number, because the mean of its divisors is an integer number (299113248).

Almost surely, 2^2878964781 is an apocalyptic number.

2878964781 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2878964781 is a deficient number, since it is larger than the sum of its proper divisors (1906847187).

2878964781 is a wasteful number, since it uses less digits than its factorization.

2878964781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12463072.

The product of its digits is 10838016, while the sum is 60.

The square root of 2878964781 is about 53655.9855095403. The cubic root of 2878964781 is about 1422.5868308329.

The spelling of 2878964781 in words is "two billion, eight hundred seventy-eight million, nine hundred sixty-four thousand, seven hundred eighty-one".