163683861 has 8 divisors (see below), whose sum is σ = 238085664. Its totient is φ = 99202320.

The previous prime is 163683853. The next prime is 163683869. The reversal of 163683861 is 168386361.

It is an interprime number because it is at equal distance from previous prime (163683853) and next prime (163683869).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163683861 - 2³ = 163683853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163683869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480026 + ... + 2480091.

It is an arithmetic number, because the mean of its divisors is an integer number (29760708).

Almost surely, 2^163683861 is an apocalyptic number.

163683861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163683861 is a deficient number, since it is larger than the sum of its proper divisors (74401803).

163683861 is a wasteful number, since it uses less digits than its factorization.

163683861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960131.

The product of its digits is 124416, while the sum is 42.

The square root of 163683861 is about 12793.8993664950. The cubic root of 163683861 is about 547.0184235133.

The spelling of 163683861 in words is "one hundred sixty-three million, six hundred eighty-three thousand, eight hundred sixty-one".