2109015049 has 2 divisors, whose sum is σ = 2109015050. Its totient is φ = 2109015048.

The previous prime is 2109014993. The next prime is 2109015071. The reversal of 2109015049 is 9405109012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2092147600 + 16867449 = 45740^2 + 4107^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109015049 - 2¹³ = 2109006857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2109015049.

It is not a weakly prime, because it can be changed into another prime (2109015149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054507524 + 1054507525.

It is an arithmetic number, because the mean of its divisors is an integer number (1054507525).

Almost surely, 2^2109015049 is an apocalyptic number.

It is an amenable number.

2109015049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109015049 is an equidigital number, since it uses as much as digits as its factorization.

2109015049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 2109015049 is about 45924.0138598533. The cubic root of 2109015049 is about 1282.4090068145.

The spelling of 2109015049 in words is "two billion, one hundred nine million, fifteen thousand, forty-nine".