163834091 has 4 divisors (see below), whose sum is σ = 166611000. Its totient is φ = 161057184.

The previous prime is 163834087. The next prime is 163834103. The reversal of 163834091 is 190438361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190438361 = 4349 ⋅43789.

It is a cyclic number.

It is not a de Polignac number, because 163834091 - 2² = 163834087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163834001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388366 + ... + 1388483.

It is an arithmetic number, because the mean of its divisors is an integer number (41652750).

Almost surely, 2^163834091 is an apocalyptic number.

163834091 is a deficient number, since it is larger than the sum of its proper divisors (2776909).

163834091 is an equidigital number, since it uses as much as digits as its factorization.

163834091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776908.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 163834091 is about 12799.7691776063. The cubic root of 163834091 is about 547.1857245711.

The spelling of 163834091 in words is "one hundred sixty-three million, eight hundred thirty-four thousand, ninety-one".