2084777509 has 2 divisors, whose sum is σ = 2084777510. Its totient is φ = 2084777508.

The previous prime is 2084777459. The next prime is 2084777521. The reversal of 2084777509 is 9057774802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1803276225 + 281501284 = 42465^2 + 16778^2 .

It is a cyclic number.

It is not a de Polignac number, because 2084777509 - 2¹³ = 2084769317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2084777599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042388754 + 1042388755.

It is an arithmetic number, because the mean of its divisors is an integer number (1042388755).

Almost surely, 2^2084777509 is an apocalyptic number.

It is an amenable number.

2084777509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2084777509 is an equidigital number, since it uses as much as digits as its factorization.

2084777509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 2084777509 is about 45659.3638698570. The cubic root of 2084777509 is about 1277.4774352730.

The spelling of 2084777509 in words is "two billion, eighty-four million, seven hundred seventy-seven thousand, five hundred nine".