163994707 has 4 divisors (see below), whose sum is σ = 164080800. Its totient is φ = 163908616.

The previous prime is 163994687. The next prime is 163994713. The reversal of 163994707 is 707499361.

163994707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707499361 = 2341 ⋅302221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163994707 is a prime.

It is a super-3 number, since 3×163994707³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163994717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40123 + ... + 44020.

It is an arithmetic number, because the mean of its divisors is an integer number (41020200).

Almost surely, 2^163994707 is an apocalyptic number.

163994707 is a deficient number, since it is larger than the sum of its proper divisors (86093).

163994707 is an equidigital number, since it uses as much as digits as its factorization.

163994707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86092.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 163994707 is about 12806.0418162678. The cubic root of 163994707 is about 547.3644787349.

The spelling of 163994707 in words is "one hundred sixty-three million, nine hundred ninety-four thousand, seven hundred seven".