163351091 has 2 divisors, whose sum is σ = 163351092. Its totient is φ = 163351090.

The previous prime is 163351087. The next prime is 163351169. The reversal of 163351091 is 190153361.

163351091 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 (190153361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163351091 - 2² = 163351087 is a prime.

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 (163351081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81675545 + 81675546.

It is an arithmetic number, because the mean of its divisors is an integer number (81675546).

Almost surely, 2^163351091 is an apocalyptic number.

163351091 is a deficient number, since it is larger than the sum of its proper divisors (1).

163351091 is an equidigital number, since it uses as much as digits as its factorization.

163351091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 163351091 is about 12780.8877234721. The cubic root of 163351091 is about 546.6474750765.

The spelling of 163351091 in words is "one hundred sixty-three million, three hundred fifty-one thousand, ninety-one".