161035859 has 2 divisors, whose sum is σ = 161035860. Its totient is φ = 161035858.

The previous prime is 161035813. The next prime is 161035909. The reversal of 161035859 is 958530161.

161035859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (958530161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161035859 - 2²⁰ = 159987283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161034859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80517929 + 80517930.

It is an arithmetic number, because the mean of its divisors is an integer number (80517930).

Almost surely, 2^161035859 is an apocalyptic number.

161035859 is a deficient number, since it is larger than the sum of its proper divisors (1).

161035859 is an equidigital number, since it uses as much as digits as its factorization.

161035859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 161035859 is about 12689.9905043306. The cubic root of 161035859 is about 544.0525682242.

The spelling of 161035859 in words is "one hundred sixty-one million, thirty-five thousand, eight hundred fifty-nine".