169401380 has 12 divisors (see below), whose sum is σ = 355742940. Its totient is φ = 67760544.

The previous prime is 169401377. The next prime is 169401403. The reversal of 169401380 is 83104961.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29073664 + 140327716 = 5392^2 + 11846^2 .

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, 4235015 + ... + 4235054.

It is an arithmetic number, because the mean of its divisors is an integer number (29645245).

Almost surely, 2^169401380 is an apocalyptic number.

169401380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169401380 is an abundant number, since it is smaller than the sum of its proper divisors (186341560).

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

169401380 is a wasteful number, since it uses less digits than its factorization.

169401380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8470078 (or 8470076 counting only the distinct ones).

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

The square root of 169401380 is about 13015.4285369326. The cubic root of 169401380 is about 553.3148354327.

The spelling of 169401380 in words is "one hundred sixty-nine million, four hundred one thousand, three hundred eighty".