163073959 has 4 divisors (see below), whose sum is σ = 163111104. Its totient is φ = 163036816.

The previous prime is 163073921. The next prime is 163073971. The reversal of 163073959 is 959370361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959370361 = 31 ⋅30947431.

It is a cyclic number.

It is not a de Polignac number, because 163073959 - 2⁷ = 163073831 is a prime.

It is a super-2 number, since 2×163073959² = 53186232207867362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163070959) 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, 10942 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (40777776).

Almost surely, 2^163073959 is an apocalyptic number.

163073959 is a deficient number, since it is larger than the sum of its proper divisors (37145).

163073959 is an equidigital number, since it uses as much as digits as its factorization.

163073959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37144.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 163073959 is about 12770.0414643023. The cubic root of 163073959 is about 546.3381632752.

The spelling of 163073959 in words is "one hundred sixty-three million, seventy-three thousand, nine hundred fifty-nine".