163920622 has 16 divisors (see below), whose sum is σ = 254185344. Its totient is φ = 79200000.

The previous prime is 163920607. The next prime is 163920629. The reversal of 163920622 is 226029361.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163920629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53122 + ... + 56122.

It is an arithmetic number, because the mean of its divisors is an integer number (15886584).

Almost surely, 2^163920622 is an apocalyptic number.

163920622 is a deficient number, since it is larger than the sum of its proper divisors (90264722).

163920622 is a wasteful number, since it uses less digits than its factorization.

163920622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 163920622 is about 12803.1489095457. The cubic root of 163920622 is about 547.2820419171.

Adding to 163920622 its reverse (226029361), we get a palindrome (389949983).

The spelling of 163920622 in words is "one hundred sixty-three million, nine hundred twenty thousand, six hundred twenty-two".