1665410202 has 96 divisors (see below), whose sum is σ = 4028104080. Its totient is φ = 494807040.

The previous prime is 1665410143. The next prime is 1665410203. The reversal of 1665410202 is 2020145661.

1665410202 is a `hidden beast` number, since 1 + 6 + 654 + 1 + 0 + 2 + 0 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1207493001 + 457917201 = 34749^2 + 21399^2 .

It is a super-2 number, since 2×1665410202² = 5547182281851361608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1665410203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468552 + ... + 472092.

Almost surely, 2^1665410202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665410202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2014052040).

1665410202 is an abundant number, since it is smaller than the sum of its proper divisors (2362693878).

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

1665410202 is a wasteful number, since it uses less digits than its factorization.

1665410202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648 (or 3645 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1665410202 is about 40809.4376584633. The cubic root of 1665410202 is about 1185.3330858776. Note that the first 3 decimals are identical.

Adding to 1665410202 its reverse (2020145661), we get a palindrome (3685555863).

The spelling of 1665410202 in words is "one billion, six hundred sixty-five million, four hundred ten thousand, two hundred two".