3391817561 has 4 divisors (see below), whose sum is σ = 3700164624. Its totient is φ = 3083470500.

The previous prime is 3391817489. The next prime is 3391817563. The reversal of 3391817561 is 1657181933.

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 not a de Polignac number, because 3391817561 - 2¹⁰ = 3391816537 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 (3391817563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154173515 + ... + 154173536.

It is an arithmetic number, because the mean of its divisors is an integer number (925041156).

Almost surely, 2^3391817561 is an apocalyptic number.

It is an amenable number.

3391817561 is a deficient number, since it is larger than the sum of its proper divisors (308347063).

3391817561 is a wasteful number, since it uses less digits than its factorization.

3391817561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308347062.

The product of its digits is 136080, while the sum is 44.

The square root of 3391817561 is about 58239.3128479380. The cubic root of 3391817561 is about 1502.4873635869.

The spelling of 3391817561 in words is "three billion, three hundred ninety-one million, eight hundred seventeen thousand, five hundred sixty-one".