3405816961 has 4 divisors (see below), whose sum is σ = 3407935300. Its totient is φ = 3403698624.

The previous prime is 3405816917. The next prime is 3405816991. The reversal of 3405816961 is 1696185043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1526074225 + 1879742736 = 39065^2 + 43356^2 .

It is a cyclic number.

It is not a de Polignac number, because 3405816961 - 2¹⁹ = 3405292673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3405816991) 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, 1056756 + ... + 1059973.

It is an arithmetic number, because the mean of its divisors is an integer number (851983825).

Almost surely, 2^3405816961 is an apocalyptic number.

It is an amenable number.

3405816961 is a deficient number, since it is larger than the sum of its proper divisors (2118339).

3405816961 is a wasteful number, since it uses less digits than its factorization.

3405816961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118338.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 3405816961 is about 58359.3776611780. The cubic root of 3405816961 is about 1504.5516500547.

The spelling of 3405816961 in words is "three billion, four hundred five million, eight hundred sixteen thousand, nine hundred sixty-one".