1665134496 has 480 divisors, whose sum is σ = 5690539008. Its totient is φ = 474439680.

The previous prime is 1665134489. The next prime is 1665134501. The reversal of 1665134496 is 6944315661.

1665134496 is a `hidden beast` number, since 1 + 6 + 6 + 513 + 44 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31417606 + ... + 31417658.

Almost surely, 2^1665134496 is an apocalyptic number.

1665134496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665134496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845269504).

1665134496 is an abundant number, since it is smaller than the sum of its proper divisors (4025404512).

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

1665134496 is a wasteful number, since it uses less digits than its factorization.

1665134496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 129 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1665134496 is about 40806.0595500227. The cubic root of 1665134496 is about 1185.2676722678.

It can be divided in two parts, 1665 and 134496, that added together give a square (136161 = 369²).

The spelling of 1665134496 in words is "one billion, six hundred sixty-five million, one hundred thirty-four thousand, four hundred ninety-six".