2605343854 has 4 divisors (see below), whose sum is σ = 3908015784. Its totient is φ = 1302671926.

The previous prime is 2605343849. The next prime is 2605343947. The reversal of 2605343854 is 4583435062.

2605343854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651335962 + ... + 651335965.

It is an arithmetic number, because the mean of its divisors is an integer number (977003946).

Almost surely, 2^2605343854 is an apocalyptic number.

2605343854 is a deficient number, since it is larger than the sum of its proper divisors (1302671930).

2605343854 is a wasteful number, since it uses less digits than its factorization.

2605343854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302671929.

The product of its (nonzero) digits is 345600, while the sum is 40.

The square root of 2605343854 is about 51042.5690380098. The cubic root of 2605343854 is about 1376.0102951135.

The spelling of 2605343854 in words is "two billion, six hundred five million, three hundred forty-three thousand, eight hundred fifty-four".