2671856129 has 2 divisors, whose sum is σ = 2671856130. Its totient is φ = 2671856128.

The previous prime is 2671856093. The next prime is 2671856147. The reversal of 2671856129 is 9216581762.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2666689600 + 5166529 = 51640^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2671856129 - 2⁸ = 2671855873 is a prime.

It is not a weakly prime, because it can be changed into another prime (2671856149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335928064 + 1335928065.

It is an arithmetic number, because the mean of its divisors is an integer number (1335928065).

Almost surely, 2^2671856129 is an apocalyptic number.

It is an amenable number.

2671856129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2671856129 is an equidigital number, since it uses as much as digits as its factorization.

2671856129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 2671856129 is about 51690.0002805185. Note that the first 3 decimals coincide. The cubic root of 2671856129 is about 1387.6215088674.

The spelling of 2671856129 in words is "two billion, six hundred seventy-one million, eight hundred fifty-six thousand, one hundred twenty-nine".