163920722 has 16 divisors (see below), whose sum is σ = 281189760. Its totient is φ = 70206048.

The previous prime is 163920721. The next prime is 163920737. The reversal of 163920722 is 227029361.

It is a happy number.

163920722 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163920721) 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, 27179 + ... + 32657.

It is an arithmetic number, because the mean of its divisors is an integer number (17574360).

Almost surely, 2^163920722 is an apocalyptic number.

163920722 is a deficient number, since it is larger than the sum of its proper divisors (117269038).

163920722 is a wasteful number, since it uses less digits than its factorization.

163920722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 163920722 is about 12803.1528148343. The cubic root of 163920722 is about 547.2821532071.

The spelling of 163920722 in words is "one hundred sixty-three million, nine hundred twenty thousand, seven hundred twenty-two".