2077897609 has 2 divisors, whose sum is σ = 2077897610. Its totient is φ = 2077897608.

The previous prime is 2077897559. The next prime is 2077897621. The reversal of 2077897609 is 9067987702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1335171600 + 742726009 = 36540^2 + 27253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077897609 - 2¹³ = 2077889417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2077897609.

It is not a weakly prime, because it can be changed into another prime (2077897639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038948804 + 1038948805.

It is an arithmetic number, because the mean of its divisors is an integer number (1038948805).

Almost surely, 2^2077897609 is an apocalyptic number.

It is an amenable number.

2077897609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2077897609 is an equidigital number, since it uses as much as digits as its factorization.

2077897609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The square root of 2077897609 is about 45583.9621906653. The cubic root of 2077897609 is about 1276.0706340308.

The spelling of 2077897609 in words is "two billion, seventy-seven million, eight hundred ninety-seven thousand, six hundred nine".