82801913 has 2 divisors, whose sum is σ = 82801914. Its totient is φ = 82801912.

The previous prime is 82801871. The next prime is 82801933. The reversal of 82801913 is 31910828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45738169 + 37063744 = 6763^2 + 6088^2 .

It is a cyclic number.

It is not a de Polignac number, because 82801913 - 2¹⁰ = 82800889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82801913.

It is not a weakly prime, because it can be changed into another prime (82801933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41400956 + 41400957.

It is an arithmetic number, because the mean of its divisors is an integer number (41400957).

Almost surely, 2^82801913 is an apocalyptic number.

It is an amenable number.

82801913 is a deficient number, since it is larger than the sum of its proper divisors (1).

82801913 is an equidigital number, since it uses as much as digits as its factorization.

82801913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 82801913 is about 9099.5556484919. Note that the first 3 decimals coincide. The cubic root of 82801913 is about 435.8597748566.

The spelling of 82801913 in words is "eighty-two million, eight hundred one thousand, nine hundred thirteen".