1208005801 has 2 divisors, whose sum is σ = 1208005802. Its totient is φ = 1208005800.

The previous prime is 1208005787. The next prime is 1208005847. The reversal of 1208005801 is 1085008021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1176421401 + 31584400 = 34299^2 + 5620^2 .

It is an emirp because it is prime and its reverse (1085008021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1208005801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1208005871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604002900 + 604002901.

It is an arithmetic number, because the mean of its divisors is an integer number (604002901).

Almost surely, 2^1208005801 is an apocalyptic number.

It is an amenable number.

1208005801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208005801 is an equidigital number, since it uses as much as digits as its factorization.

1208005801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1208005801 is about 34756.3778463752. The cubic root of 1208005801 is about 1065.0165091080.

The spelling of 1208005801 in words is "one billion, two hundred eight million, five thousand, eight hundred one".