169490454 has 64 divisors (see below), whose sum is σ = 402124800. Its totient is φ = 46604160.

The previous prime is 169490429. The next prime is 169490467. The reversal of 169490454 is 454094961.

It is a super-3 number, since 3×169490454³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 454212 + ... + 454584.

It is an arithmetic number, because the mean of its divisors is an integer number (6283200).

Almost surely, 2^169490454 is an apocalyptic number.

169490454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 169490454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201062400).

169490454 is an abundant number, since it is smaller than the sum of its proper divisors (232634346).

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

169490454 is a wasteful number, since it uses less digits than its factorization.

169490454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 169490454 is about 13018.8499492083. The cubic root of 169490454 is about 553.4117990853.

The spelling of 169490454 in words is "one hundred sixty-nine million, four hundred ninety thousand, four hundred fifty-four".