2334405781 has 4 divisors (see below), whose sum is σ = 2334923500. Its totient is φ = 2333888064.

The previous prime is 2334405763. The next prime is 2334405817. The reversal of 2334405781 is 1875044332.

It is a happy number.

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 592679025 + 1741726756 = 24345^2 + 41734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2334405781 is a prime.

It is a super-2 number, since 2×2334405781² = 10898900700732439922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2334405781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2334405761) 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, 252036 + ... + 261133.

It is an arithmetic number, because the mean of its divisors is an integer number (583730875).

Almost surely, 2^2334405781 is an apocalyptic number.

It is an amenable number.

2334405781 is a deficient number, since it is larger than the sum of its proper divisors (517719).

2334405781 is an equidigital number, since it uses as much as digits as its factorization.

2334405781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517718.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2334405781 is about 48315.6887666936. The cubic root of 2334405781 is about 1326.5555777274. Note that the first 4 decimals are identical.

The spelling of 2334405781 in words is "two billion, three hundred thirty-four million, four hundred five thousand, seven hundred eighty-one".