169142018 has 8 divisors (see below), whose sum is σ = 253782012. Its totient is φ = 84548016.

The previous prime is 169141997. The next prime is 169142041. The reversal of 169142018 is 810241961.

It can be written as a sum of positive squares in 2 ways, for example, as 169078009 + 64009 = 13003^2 + 253^2 .

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

It is a super-2 number, since 2×169142018² = 57218044506224648, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 5 + ... + 18392.

Almost surely, 2^169142018 is an apocalyptic number.

169142018 is a deficient number, since it is larger than the sum of its proper divisors (84639994).

169142018 is a wasteful number, since it uses less digits than its factorization.

169142018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22996.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 169142018 is about 13005.4610837140. The cubic root of 169142018 is about 553.0323069502.

Adding to 169142018 its reverse (810241961), we get a palindrome (979383979).

The spelling of 169142018 in words is "one hundred sixty-nine million, one hundred forty-two thousand, eighteen".