2927681871 has 16 divisors (see below), whose sum is σ = 3918958848. Its totient is φ = 1944113600.

The previous prime is 2927681837. The next prime is 2927681909. The reversal of 2927681871 is 1781867292.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2927681871 is a prime.

It is a super-2 number, since 2×2927681871² = 17142642275564121282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2927681171) 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, 915886 + ... + 919076.

It is an arithmetic number, because the mean of its divisors is an integer number (244934928).

Almost surely, 2^2927681871 is an apocalyptic number.

2927681871 is a deficient number, since it is larger than the sum of its proper divisors (991276977).

2927681871 is a wasteful number, since it uses less digits than its factorization.

2927681871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302.

The product of its digits is 677376, while the sum is 51.

The square root of 2927681871 is about 54108.0573574768. The cubic root of 2927681871 is about 1430.5662046225.

The spelling of 2927681871 in words is "two billion, nine hundred twenty-seven million, six hundred eighty-one thousand, eight hundred seventy-one".