163741873 has 4 divisors (see below), whose sum is σ = 166426228. Its totient is φ = 161057520.

The previous prime is 163741793. The next prime is 163741883. The reversal of 163741873 is 378147361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44997264 + 118744609 = 6708^2 + 10897^2 .

It is a cyclic number.

It is not a de Polignac number, because 163741873 - 2²⁵ = 130187441 is a prime.

It is a super-2 number, since 2×163741873² = 53622801947096258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163741883) 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, 1342086 + ... + 1342207.

It is an arithmetic number, because the mean of its divisors is an integer number (41606557).

Almost surely, 2^163741873 is an apocalyptic number.

It is an amenable number.

163741873 is a deficient number, since it is larger than the sum of its proper divisors (2684355).

163741873 is an equidigital number, since it uses as much as digits as its factorization.

163741873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684354.

The product of its digits is 84672, while the sum is 40.

The square root of 163741873 is about 12796.1663399629. The cubic root of 163741873 is about 547.0830397078.

The spelling of 163741873 in words is "one hundred sixty-three million, seven hundred forty-one thousand, eight hundred seventy-three".