3435809381 has 4 divisors (see below), whose sum is σ = 3528669132. Its totient is φ = 3342949632.

The previous prime is 3435809371. The next prime is 3435809401. The reversal of 3435809381 is 1839085343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1839085343 = 4357 ⋅422099.

It can be written as a sum of positive squares in 2 ways, for example, as 2637746881 + 798062500 = 51359^2 + 28250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3435809381 is a prime.

It is a super-2 number, since 2×3435809381² = 23609572205135206322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3435809371) 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, 46429820 + ... + 46429893.

It is an arithmetic number, because the mean of its divisors is an integer number (882167283).

Almost surely, 2^3435809381 is an apocalyptic number.

It is an amenable number.

3435809381 is a deficient number, since it is larger than the sum of its proper divisors (92859751).

3435809381 is an equidigital number, since it uses as much as digits as its factorization.

3435809381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92859750.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 3435809381 is about 58615.7775773725. Note that the first 3 decimals coincide. The cubic root of 3435809381 is about 1508.9552267318.

The spelling of 3435809381 in words is "three billion, four hundred thirty-five million, eight hundred nine thousand, three hundred eighty-one".