1208782465049 has 2 divisors, whose sum is σ = 1208782465050. Its totient is φ = 1208782465048.

The previous prime is 1208782465039. The next prime is 1208782465081. The reversal of 1208782465049 is 9405642878021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 776434134025 + 432348331024 = 881155^2 + 657532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208782465049 - 2⁸ = 1208782464793 is a prime.

It is a super-2 number, since 2×1208782465049² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1208782464985 and 1208782465003.

It is not a weakly prime, because it can be changed into another prime (1208782465039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604391232524 + 604391232525.

It is an arithmetic number, because the mean of its divisors is an integer number (604391232525).

Almost surely, 2^{1208782465049} is an apocalyptic number.

It is an amenable number.

1208782465049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208782465049 is an equidigital number, since it uses as much as digits as its factorization.

1208782465049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 1208782465049 in words is "one trillion, two hundred eight billion, seven hundred eighty-two million, four hundred sixty-five thousand, forty-nine".