169378990 has 64 divisors (see below), whose sum is σ = 359017920. Its totient is φ = 56842240.

The previous prime is 169378943. The next prime is 169379003. The reversal of 169378990 is 99873961.

169378990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 98256 + ... + 99964.

It is an arithmetic number, because the mean of its divisors is an integer number (5609655).

Almost surely, 2^169378990 is an apocalyptic number.

169378990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169378990 is an abundant number, since it is smaller than the sum of its proper divisors (189638930).

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

169378990 is a wasteful number, since it uses less digits than its factorization.

169378990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 169378990 is about 13014.5683754783. The cubic root of 169378990 is about 553.2904569122.

The spelling of 169378990 in words is "one hundred sixty-nine million, three hundred seventy-eight thousand, nine hundred ninety".