169161912 has 64 divisors (see below), whose sum is σ = 471609600. Its totient is φ = 56181600.

The previous prime is 169161911. The next prime is 169161913. The reversal of 169161912 is 219161961.

It is an interprime number because it is at equal distance from previous prime (169161911) and next prime (169161913).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169161911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65037 + ... + 67587.

It is an arithmetic number, because the mean of its divisors is an integer number (7368900).

Almost surely, 2^169161912 is an apocalyptic number.

169161912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169161912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235804800).

169161912 is an abundant number, since it is smaller than the sum of its proper divisors (302447688).

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

169161912 is a wasteful number, since it uses less digits than its factorization.

169161912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2863 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 169161912 is about 13006.2258937787. The cubic root of 169161912 is about 553.0539881258.

The spelling of 169161912 in words is "one hundred sixty-nine million, one hundred sixty-one thousand, nine hundred twelve".