2165732419 has 2 divisors, whose sum is σ = 2165732420. Its totient is φ = 2165732418.

The previous prime is 2165732407. The next prime is 2165732477. The reversal of 2165732419 is 9142375612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2165732419 - 2⁷ = 2165732291 is a prime.

It is a super-2 number, since 2×2165732419² = 9380793821415183122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2165732519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082866209 + 1082866210.

It is an arithmetic number, because the mean of its divisors is an integer number (1082866210).

Almost surely, 2^2165732419 is an apocalyptic number.

2165732419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165732419 is an equidigital number, since it uses as much as digits as its factorization.

2165732419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 2165732419 is about 46537.4303007805. The cubic root of 2165732419 is about 1293.8033337516.

The spelling of 2165732419 in words is "two billion, one hundred sixty-five million, seven hundred thirty-two thousand, four hundred nineteen".