2109470761 has 2 divisors, whose sum is σ = 2109470762. Its totient is φ = 2109470760.

The previous prime is 2109470747. The next prime is 2109470773. The reversal of 2109470761 is 1670749012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2036265625 + 73205136 = 45125^2 + 8556^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109470761 - 2⁷ = 2109470633 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2109470761.

It is not a weakly prime, because it can be changed into another prime (2109470711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054735380 + 1054735381.

It is an arithmetic number, because the mean of its divisors is an integer number (1054735381).

Almost surely, 2^2109470761 is an apocalyptic number.

It is an amenable number.

2109470761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109470761 is an equidigital number, since it uses as much as digits as its factorization.

2109470761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 2109470761 is about 45928.9751790740. The cubic root of 2109470761 is about 1282.5013670035.

The spelling of 2109470761 in words is "two billion, one hundred nine million, four hundred seventy thousand, seven hundred sixty-one".