163620023 has 4 divisors (see below), whose sum is σ = 186994320. Its totient is φ = 140245728.

The previous prime is 163619987. The next prime is 163620043. The reversal of 163620023 is 320026361.

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

It is a de Polignac number, because none of the positive numbers 2^k-163620023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163620043) 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 in 3 ways as a sum of consecutive naturals, for example, 11687138 + ... + 11687151.

It is an arithmetic number, because the mean of its divisors is an integer number (46748580).

Almost surely, 2^163620023 is an apocalyptic number.

163620023 is a deficient number, since it is larger than the sum of its proper divisors (23374297).

163620023 is an equidigital number, since it uses as much as digits as its factorization.

163620023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374296.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 163620023 is about 12791.4042622380. The cubic root of 163620023 is about 546.9473004296.

Adding to 163620023 its reverse (320026361), we get a palindrome (483646384).

The spelling of 163620023 in words is "one hundred sixty-three million, six hundred twenty thousand, twenty-three".