163920127 has 4 divisors (see below), whose sum is σ = 187337296. Its totient is φ = 140502960.

The previous prime is 163920079. The next prime is 163920143. The reversal of 163920127 is 721029361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163920127 is a prime.

It is a super-2 number, since 2×163920127² = 53739616071392258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163920167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11708574 + ... + 11708587.

It is an arithmetic number, because the mean of its divisors is an integer number (46834324).

Almost surely, 2^163920127 is an apocalyptic number.

163920127 is a deficient number, since it is larger than the sum of its proper divisors (23417169).

163920127 is an equidigital number, since it uses as much as digits as its factorization.

163920127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23417168.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 163920127 is about 12803.1295783492. The cubic root of 163920127 is about 547.2814910307.

Adding to 163920127 its reverse (721029361), we get a palindrome (884949488).

The spelling of 163920127 in words is "one hundred sixty-three million, nine hundred twenty thousand, one hundred twenty-seven".