1208919799 has 2 divisors, whose sum is σ = 1208919800. Its totient is φ = 1208919798.

The previous prime is 1208919749. The next prime is 1208919823. The reversal of 1208919799 is 9979198021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1208919799 - 2⁷ = 1208919671 is a prime.

It is a super-2 number, since 2×1208919799² = 2922974160828400802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1208919709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604459899 + 604459900.

It is an arithmetic number, because the mean of its divisors is an integer number (604459900).

Almost surely, 2^1208919799 is an apocalyptic number.

1208919799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208919799 is an equidigital number, since it uses as much as digits as its factorization.

1208919799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 55.

The square root of 1208919799 is about 34769.5239973170. The cubic root of 1208919799 is about 1065.2850446727.

The spelling of 1208919799 in words is "one billion, two hundred eight million, nine hundred nineteen thousand, seven hundred ninety-nine".