2628193894 has 4 divisors (see below), whose sum is σ = 3942290844. Its totient is φ = 1314096946.

The previous prime is 2628193891. The next prime is 2628193993. The reversal of 2628193894 is 4983918262.

2628193894 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628193891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657048472 + ... + 657048475.

It is an arithmetic number, because the mean of its divisors is an integer number (985572711).

Almost surely, 2^2628193894 is an apocalyptic number.

2628193894 is a deficient number, since it is larger than the sum of its proper divisors (1314096950).

2628193894 is a wasteful number, since it uses less digits than its factorization.

2628193894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314096949.

The product of its digits is 1492992, while the sum is 52.

The square root of 2628193894 is about 51265.9135683741. The cubic root of 2628193894 is about 1380.0213351739.

The spelling of 2628193894 in words is "two billion, six hundred twenty-eight million, one hundred ninety-three thousand, eight hundred ninety-four".