2721832129 has 2 divisors, whose sum is σ = 2721832130. Its totient is φ = 2721832128.

The previous prime is 2721832117. The next prime is 2721832153. The reversal of 2721832129 is 9212381272.

2721832129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2011343104 + 710489025 = 44848^2 + 26655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2721832129 - 2²³ = 2713443521 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (2721832159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360916064 + 1360916065.

It is an arithmetic number, because the mean of its divisors is an integer number (1360916065).

Almost surely, 2^2721832129 is an apocalyptic number.

It is an amenable number.

2721832129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721832129 is an equidigital number, since it uses as much as digits as its factorization.

2721832129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 2721832129 is about 52171.1810197929. The cubic root of 2721832129 is about 1396.2197557799.

The spelling of 2721832129 in words is "two billion, seven hundred twenty-one million, eight hundred thirty-two thousand, one hundred twenty-nine".