169000002 has 24 divisors (see below), whose sum is σ = 366784236. Its totient is φ = 56238336.

The previous prime is 168999997. The next prime is 169000033. The reversal of 169000002 is 200000961.

It can be written as a sum of positive squares in 2 ways, for example, as 166952241 + 2047761 = 12921^2 + 1431^2 .

It is a super-2 number, since 2×169000002² = 57122001352000008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3498 + ... + 18714.

Almost surely, 2^169000002 is an apocalyptic number.

169000002 is an abundant number, since it is smaller than the sum of its proper divisors (197784234).

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

169000002 is a wasteful number, since it uses less digits than its factorization.

169000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842 (or 15839 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 169000002 is about 13000.0000769231. Note that the first 4 decimals coincide. The cubic root of 169000002 is about 552.8774835489.

Adding to 169000002 its reverse (200000961), we get a palindrome (369000963).

The spelling of 169000002 in words is "one hundred sixty-nine million, two", and thus it is an aban number.