163191334 has 4 divisors (see below), whose sum is σ = 244787004. Its totient is φ = 81595666.

The previous prime is 163191319. The next prime is 163191337. The reversal of 163191334 is 433191361.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×163191334² = 53262822985399112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163191296 and 163191305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163191337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40797832 + ... + 40797835.

It is an arithmetic number, because the mean of its divisors is an integer number (61196751).

Almost surely, 2^163191334 is an apocalyptic number.

163191334 is a deficient number, since it is larger than the sum of its proper divisors (81595670).

163191334 is an equidigital number, since it uses as much as digits as its factorization.

163191334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81595669.

The product of its digits is 5832, while the sum is 31.

The square root of 163191334 is about 12774.6363549026. The cubic root of 163191334 is about 546.4692102822.

The spelling of 163191334 in words is "one hundred sixty-three million, one hundred ninety-one thousand, three hundred thirty-four".