2084477861 has 2 divisors, whose sum is σ = 2084477862. Its totient is φ = 2084477860.

The previous prime is 2084477849. The next prime is 2084477903. The reversal of 2084477861 is 1687744802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1227100900 + 857376961 = 35030^2 + 29281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2084477861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2084477261) 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, 1042238930 + 1042238931.

It is an arithmetic number, because the mean of its divisors is an integer number (1042238931).

Almost surely, 2^2084477861 is an apocalyptic number.

It is an amenable number.

2084477861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2084477861 is an equidigital number, since it uses as much as digits as its factorization.

2084477861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 2084477861 is about 45656.0824096856. The cubic root of 2084477861 is about 1277.4162277983.

The spelling of 2084477861 in words is "two billion, eighty-four million, four hundred seventy-seven thousand, eight hundred sixty-one".