2649728401 has 2 divisors, whose sum is σ = 2649728402. Its totient is φ = 2649728400.

The previous prime is 2649728399. The next prime is 2649728453. The reversal of 2649728401 is 1048279462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1960718400 + 689010001 = 44280^2 + 26249^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649728401 - 2¹ = 2649728399 is a prime.

Together with 2649728399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2649728701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324864200 + 1324864201.

It is an arithmetic number, because the mean of its divisors is an integer number (1324864201).

Almost surely, 2^2649728401 is an apocalyptic number.

It is an amenable number.

2649728401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649728401 is an equidigital number, since it uses as much as digits as its factorization.

2649728401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 2649728401 is about 51475.5126346499. The cubic root of 2649728401 is about 1383.7802257819.

The spelling of 2649728401 in words is "two billion, six hundred forty-nine million, seven hundred twenty-eight thousand, four hundred one".