1641134365 has 16 divisors (see below), whose sum is σ = 2123715888. Its totient is φ = 1210277376.

The previous prime is 1641134359. The next prime is 1641134377. The reversal of 1641134365 is 5634311461.

It can be written as a sum of positive squares in 8 ways, for example, as 297838564 + 1343295801 = 17258^2 + 36651^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641134365 - 2³ = 1641134357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1641134365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32529 + ... + 65881.

It is an arithmetic number, because the mean of its divisors is an integer number (132732243).

Almost surely, 2^1641134365 is an apocalyptic number.

It is an amenable number.

1641134365 is a deficient number, since it is larger than the sum of its proper divisors (482581523).

1641134365 is a wasteful number, since it uses less digits than its factorization.

1641134365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34128.

The product of its digits is 25920, while the sum is 34.

The square root of 1641134365 is about 40510.9166151545. The cubic root of 1641134365 is about 1179.5455410244.

The spelling of 1641134365 in words is "one billion, six hundred forty-one million, one hundred thirty-four thousand, three hundred sixty-five".