3775521641 has 8 divisors (see below), whose sum is σ = 3788121600. Its totient is φ = 3762940320.

The previous prime is 3775521637. The next prime is 3775521649. The reversal of 3775521641 is 1461255773.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3775521641 - 2² = 3775521637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3775521649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482720 + ... + 490478.

It is an arithmetic number, because the mean of its divisors is an integer number (473515200).

Almost surely, 2^3775521641 is an apocalyptic number.

It is an amenable number.

3775521641 is a deficient number, since it is larger than the sum of its proper divisors (12599959).

3775521641 is a wasteful number, since it uses less digits than its factorization.

3775521641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319.

The product of its digits is 176400, while the sum is 41.

The square root of 3775521641 is about 61445.2735448383. The cubic root of 3775521641 is about 1557.1328061616.

The spelling of 3775521641 in words is "three billion, seven hundred seventy-five million, five hundred twenty-one thousand, six hundred forty-one".