1208061778 has 32 divisors (see below), whose sum is σ = 2305353600. Its totient is φ = 470670480.

The previous prime is 1208061739. The next prime is 1208061809. The reversal of 1208061778 is 8771608021.

It is a self number, because there is not a number n which added to its sum of digits gives 1208061778.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72501 + ... + 87592.

It is an arithmetic number, because the mean of its divisors is an integer number (72042300).

Almost surely, 2^1208061778 is an apocalyptic number.

1208061778 is a deficient number, since it is larger than the sum of its proper divisors (1097291822).

1208061778 is a wasteful number, since it uses less digits than its factorization.

1208061778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160127 (or 160113 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 1208061778 is about 34757.1831137105. The cubic root of 1208061778 is about 1065.0329592245.

Adding to 1208061778 its reverse (8771608021), we get a palindrome (9979669799).

The spelling of 1208061778 in words is "one billion, two hundred eight million, sixty-one thousand, seven hundred seventy-eight".