3405709181 has 6 divisors (see below), whose sum is σ = 3961743390. Its totient is φ = 2919179256.

The previous prime is 3405709121. The next prime is 3405709187. The reversal of 3405709181 is 1819075043.

It can be written as a sum of positive squares in only one way, i.e., 3125816281 + 279892900 = 55909^2 + 16730^2 .

It is not a de Polignac number, because 3405709181 - 2¹⁰ = 3405708157 is a prime.

It is a super-2 number, since 2×3405709181² = 23197710051095381522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405709187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34752086 + ... + 34752183.

It is an arithmetic number, because the mean of its divisors is an integer number (660290565).

Almost surely, 2^3405709181 is an apocalyptic number.

It is an amenable number.

3405709181 is a deficient number, since it is larger than the sum of its proper divisors (556034209).

3405709181 is an equidigital number, since it uses as much as digits as its factorization.

3405709181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69504283 (or 69504276 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 3405709181 is about 58358.4542375824. The cubic root of 3405709181 is about 1504.5357789446.

The spelling of 3405709181 in words is "three billion, four hundred five million, seven hundred nine thousand, one hundred eighty-one".