169823868 has 12 divisors (see below), whose sum is σ = 396255720. Its totient is φ = 56607952.

The previous prime is 169823867. The next prime is 169823869. The reversal of 169823868 is 868328961.

It is an interprime number because it is at equal distance from previous prime (169823867) and next prime (169823869).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×169823868² = 57680292284962848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 169823868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169823861) 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, 7075983 + ... + 7076006.

It is an arithmetic number, because the mean of its divisors is an integer number (33021310).

Almost surely, 2^169823868 is an apocalyptic number.

It is an amenable number.

169823868 is an abundant number, since it is smaller than the sum of its proper divisors (226431852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169823868 is a wasteful number, since it uses less digits than its factorization.

169823868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151996 (or 14151994 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 169823868 is about 13031.6487061308. The cubic root of 169823868 is about 553.7744436655.

The spelling of 169823868 in words is "one hundred sixty-nine million, eight hundred twenty-three thousand, eight hundred sixty-eight".