1204851551 has 2 divisors, whose sum is σ = 1204851552. Its totient is φ = 1204851550.

The previous prime is 1204851547. The next prime is 1204851581. The reversal of 1204851551 is 1551584021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1204851551 - 2² = 1204851547 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204851521) 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, 602425775 + 602425776.

It is an arithmetic number, because the mean of its divisors is an integer number (602425776).

Almost surely, 2^1204851551 is an apocalyptic number.

1204851551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204851551 is an equidigital number, since it uses as much as digits as its factorization.

1204851551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 32.

The square root of 1204851551 is about 34710.9716228169. The cubic root of 1204851551 is about 1064.0887386063.

The spelling of 1204851551 in words is "one billion, two hundred four million, eight hundred fifty-one thousand, five hundred fifty-one".