2606781923 has 2 divisors, whose sum is σ = 2606781924. Its totient is φ = 2606781922.

The previous prime is 2606781857. The next prime is 2606781937. The reversal of 2606781923 is 3291876062.

2606781923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2606781923 - 2¹⁸ = 2606519779 is a prime.

It is not a weakly prime, because it can be changed into another prime (2606781973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303390961 + 1303390962.

It is an arithmetic number, because the mean of its divisors is an integer number (1303390962).

Almost surely, 2^2606781923 is an apocalyptic number.

2606781923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606781923 is an equidigital number, since it uses as much as digits as its factorization.

2606781923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2606781923 is about 51056.6540521409. The cubic root of 2606781923 is about 1376.2634202150.

The spelling of 2606781923 in words is "two billion, six hundred six million, seven hundred eighty-one thousand, nine hundred twenty-three".