2147609161 has 2 divisors, whose sum is σ = 2147609162. Its totient is φ = 2147609160.

The previous prime is 2147609143. The next prime is 2147609171. The reversal of 2147609161 is 1619067412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251744400 + 895864761 = 35380^2 + 29931^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147609161 - 2⁵ = 2147609129 is a prime.

It is a super-2 number, since 2×2147609161² = 9224450216822247842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2147609161.

It is not a weakly prime, because it can be changed into another prime (2147609171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073804580 + 1073804581.

It is an arithmetic number, because the mean of its divisors is an integer number (1073804581).

Almost surely, 2^2147609161 is an apocalyptic number.

It is an amenable number.

2147609161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2147609161 is an equidigital number, since it uses as much as digits as its factorization.

2147609161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2147609161 is about 46342.3042262682. The cubic root of 2147609161 is about 1290.1842897178.

The spelling of 2147609161 in words is "two billion, one hundred forty-seven million, six hundred nine thousand, one hundred sixty-one".