2857805623 has 2 divisors, whose sum is σ = 2857805624. Its totient is φ = 2857805622.

The previous prime is 2857805611. The next prime is 2857805627. The reversal of 2857805623 is 3265087582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2857805623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857805627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428902811 + 1428902812.

It is an arithmetic number, because the mean of its divisors is an integer number (1428902812).

Almost surely, 2^2857805623 is an apocalyptic number.

2857805623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857805623 is an equidigital number, since it uses as much as digits as its factorization.

2857805623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 2857805623 is about 53458.4476299116. The cubic root of 2857805623 is about 1419.0931230927.

The spelling of 2857805623 in words is "two billion, eight hundred fifty-seven million, eight hundred five thousand, six hundred twenty-three".