3684521291 has 8 divisors (see below), whose sum is σ = 4037505024. Its totient is φ = 3334542120.

The previous prime is 3684521261. The next prime is 3684521341. The reversal of 3684521291 is 1921254863.

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

It is a cyclic number.

It is not a de Polignac number, because 3684521291 - 2⁶ = 3684521227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3684521261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 748571 + ... + 753476.

It is an arithmetic number, because the mean of its divisors is an integer number (504688128).

Almost surely, 2^3684521291 is an apocalyptic number.

3684521291 is a deficient number, since it is larger than the sum of its proper divisors (352983733).

3684521291 is a wasteful number, since it uses less digits than its factorization.

3684521291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502281.

The product of its digits is 103680, while the sum is 41.

The square root of 3684521291 is about 60700.2577506883. The cubic root of 3684521291 is about 1544.5205469344.

The spelling of 3684521291 in words is "three billion, six hundred eighty-four million, five hundred twenty-one thousand, two hundred ninety-one".