1208778275 has 6 divisors (see below), whose sum is σ = 1498885092. Its totient is φ = 967022600.

The previous prime is 1208778269. The next prime is 1208778283. The reversal of 1208778275 is 5728778021.

It is a de Polignac number, because none of the positive numbers 2^k-1208778275 is a prime.

It is a super-2 number, since 2×1208778275² = 2922289836223951250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24175541 + ... + 24175590.

It is an arithmetic number, because the mean of its divisors is an integer number (249814182).

Almost surely, 2^1208778275 is an apocalyptic number.

1208778275 is a deficient number, since it is larger than the sum of its proper divisors (290106817).

1208778275 is an equidigital number, since it uses as much as digits as its factorization.

1208778275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48351141 (or 48351136 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 47.

The square root of 1208778275 is about 34767.4887646491. The cubic root of 1208778275 is about 1065.2434733227.

The spelling of 1208778275 in words is "one billion, two hundred eight million, seven hundred seventy-eight thousand, two hundred seventy-five".