2045417161 has 2 divisors, whose sum is σ = 2045417162. Its totient is φ = 2045417160.

The previous prime is 2045417147. The next prime is 2045417167. The reversal of 2045417161 is 1617145402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1263375936 + 782041225 = 35544^2 + 27965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045417161 - 2⁹ = 2045416649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2045417167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022708580 + 1022708581.

It is an arithmetic number, because the mean of its divisors is an integer number (1022708581).

Almost surely, 2^2045417161 is an apocalyptic number.

It is an amenable number.

2045417161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045417161 is an equidigital number, since it uses as much as digits as its factorization.

2045417161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2045417161 is about 45226.2883840803. The cubic root of 2045417161 is about 1269.3867626515.

The spelling of 2045417161 in words is "two billion, forty-five million, four hundred seventeen thousand, one hundred sixty-one".