3391538561 has 4 divisors (see below), whose sum is σ = 3392105472. Its totient is φ = 3390971652.

The previous prime is 3391538543. The next prime is 3391538567. The reversal of 3391538561 is 1658351933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3391538561 - 2⁶ = 3391538497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3391538567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274385 + ... + 286478.

It is an arithmetic number, because the mean of its divisors is an integer number (848026368).

Almost surely, 2^3391538561 is an apocalyptic number.

It is an amenable number.

3391538561 is a deficient number, since it is larger than the sum of its proper divisors (566911).

3391538561 is an equidigital number, since it uses as much as digits as its factorization.

3391538561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566910.

The product of its digits is 291600, while the sum is 44.

The square root of 3391538561 is about 58236.9175094287. The cubic root of 3391538561 is about 1502.4461658651.

The spelling of 3391538561 in words is "three billion, three hundred ninety-one million, five hundred thirty-eight thousand, five hundred sixty-one".