163769983 has 8 divisors (see below), whose sum is σ = 176592528. Its totient is φ = 150979584.

The previous prime is 163769981. The next prime is 163770007. The reversal of 163769983 is 389967361.

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

It is a cyclic number.

It is not a de Polignac number, because 163769983 - 2¹ = 163769981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163769983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163769981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3135 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (22074066).

Almost surely, 2^163769983 is an apocalyptic number.

163769983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163769983 is a deficient number, since it is larger than the sum of its proper divisors (12822545).

163769983 is a wasteful number, since it uses less digits than its factorization.

163769983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16073.

The product of its digits is 1469664, while the sum is 52.

The square root of 163769983 is about 12797.2646686704. The cubic root of 163769983 is about 547.1143443135.

The spelling of 163769983 in words is "one hundred sixty-three million, seven hundred sixty-nine thousand, nine hundred eighty-three".