814611649 has 2 divisors, whose sum is σ = 814611650. Its totient is φ = 814611648.

The previous prime is 814611619. The next prime is 814611667. The reversal of 814611649 is 946116418.

814611649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411887025 + 402724624 = 20295^2 + 20068^2 .

It is a cyclic number.

It is not a de Polignac number, because 814611649 - 2²¹ = 812514497 is a prime.

It is not a weakly prime, because it can be changed into another prime (814611619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407305824 + 407305825.

It is an arithmetic number, because the mean of its divisors is an integer number (407305825).

Almost surely, 2^814611649 is an apocalyptic number.

It is an amenable number.

814611649 is a deficient number, since it is larger than the sum of its proper divisors (1).

814611649 is an equidigital number, since it uses as much as digits as its factorization.

814611649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 814611649 is about 28541.4023656862. The cubic root of 814611649 is about 933.9354748651.

The spelling of 814611649 in words is "eight hundred fourteen million, six hundred eleven thousand, six hundred forty-nine".