163690373 has 16 divisors (see below), whose sum is σ = 205779840. Its totient is φ = 127543680.

The previous prime is 163690363. The next prime is 163690421. The reversal of 163690373 is 373096361.

It is a happy number.

163690373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163690373 - 2⁸ = 163690117 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163690363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533 + ... + 18101.

It is an arithmetic number, because the mean of its divisors is an integer number (12861240).

Almost surely, 2^163690373 is an apocalyptic number.

It is an amenable number.

163690373 is a deficient number, since it is larger than the sum of its proper divisors (42089467).

163690373 is an equidigital number, since it uses as much as digits as its factorization.

163690373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17609 (or 17587 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 163690373 is about 12794.1538602598. The cubic root of 163690373 is about 547.0256776122.

The spelling of 163690373 in words is "one hundred sixty-three million, six hundred ninety thousand, three hundred seventy-three".