169138040 has 32 divisors (see below), whose sum is σ = 381095280. Its totient is φ = 67560192.

The previous prime is 169138037. The next prime is 169138087. The reversal of 169138040 is 40831961.

It is a happy number.

169138040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 169137988 and 169138006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30524 + ... + 35636.

Almost surely, 2^169138040 is an apocalyptic number.

169138040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169138040 is an abundant number, since it is smaller than the sum of its proper divisors (211957240).

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

169138040 is a wasteful number, since it uses less digits than its factorization.

169138040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951 (or 5947 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 169138040 is about 13005.3081470606. The cubic root of 169138040 is about 553.0279713830.

The spelling of 169138040 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, forty".