1208973551 has 2 divisors, whose sum is σ = 1208973552. Its totient is φ = 1208973550.

The previous prime is 1208973539. The next prime is 1208973569. The reversal of 1208973551 is 1553798021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1208973551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1208973499 and 1208973508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1208976551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604486775 + 604486776.

It is an arithmetic number, because the mean of its divisors is an integer number (604486776).

Almost surely, 2^1208973551 is an apocalyptic number.

1208973551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208973551 is an equidigital number, since it uses as much as digits as its factorization.

1208973551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 1208973551 is about 34770.2969645069. The cubic root of 1208973551 is about 1065.3008329693.

The spelling of 1208973551 in words is "one billion, two hundred eight million, nine hundred seventy-three thousand, five hundred fifty-one".