2104407857 has 2 divisors, whose sum is σ = 2104407858. Its totient is φ = 2104407856.

The previous prime is 2104407847. The next prime is 2104407863. The reversal of 2104407857 is 7587044012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2097273616 + 7134241 = 45796^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104407857 - 2¹⁰ = 2104406833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2104407857.

It is not a weakly prime, because it can be changed into another prime (2104407847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052203928 + 1052203929.

It is an arithmetic number, because the mean of its divisors is an integer number (1052203929).

Almost surely, 2^2104407857 is an apocalyptic number.

It is an amenable number.

2104407857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104407857 is an equidigital number, since it uses as much as digits as its factorization.

2104407857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 2104407857 is about 45873.8254018563. The cubic root of 2104407857 is about 1281.4745086587.

The spelling of 2104407857 in words is "two billion, one hundred four million, four hundred seven thousand, eight hundred fifty-seven".