2162512409 has 2 divisors, whose sum is σ = 2162512410. Its totient is φ = 2162512408.

The previous prime is 2162512393. The next prime is 2162512423. The reversal of 2162512409 is 9042152612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1154640400 + 1007872009 = 33980^2 + 31747^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162512409 - 2⁴ = 2162512393 is a prime.

It is not a weakly prime, because it can be changed into another prime (2167512409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081256204 + 1081256205.

It is an arithmetic number, because the mean of its divisors is an integer number (1081256205).

Almost surely, 2^2162512409 is an apocalyptic number.

It is an amenable number.

2162512409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162512409 is an equidigital number, since it uses as much as digits as its factorization.

2162512409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2162512409 is about 46502.8215165489. The cubic root of 2162512409 is about 1293.1618069650.

The spelling of 2162512409 in words is "two billion, one hundred sixty-two million, five hundred twelve thousand, four hundred nine".