165080819 has 2 divisors, whose sum is σ = 165080820. Its totient is φ = 165080818.

The previous prime is 165080767. The next prime is 165080857. The reversal of 165080819 is 918080561.

It is an a-pointer prime, because the next prime (165080857) can be obtained adding 165080819 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165080819 is a prime.

It is a super-2 number, since 2×165080819² = 54503353603421522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165080119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82540409 + 82540410.

It is an arithmetic number, because the mean of its divisors is an integer number (82540410).

Almost surely, 2^165080819 is an apocalyptic number.

165080819 is a deficient number, since it is larger than the sum of its proper divisors (1).

165080819 is an equidigital number, since it uses as much as digits as its factorization.

165080819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 165080819 is about 12848.3780688459. The cubic root of 165080819 is about 548.5701914506.

The spelling of 165080819 in words is "one hundred sixty-five million, eighty thousand, eight hundred nineteen".