1248287851 has 2 divisors, whose sum is σ = 1248287852. Its totient is φ = 1248287850.

The previous prime is 1248287801. The next prime is 1248287863. The reversal of 1248287851 is 1587828421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248287851 - 2⁷ = 1248287723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1248287801) 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, 624143925 + 624143926.

It is an arithmetic number, because the mean of its divisors is an integer number (624143926).

Almost surely, 2^1248287851 is an apocalyptic number.

1248287851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248287851 is an equidigital number, since it uses as much as digits as its factorization.

1248287851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 286720, while the sum is 46.

The square root of 1248287851 is about 35331.1173188735. The cubic root of 1248287851 is about 1076.7252918626.

The spelling of 1248287851 in words is "one billion, two hundred forty-eight million, two hundred eighty-seven thousand, eight hundred fifty-one".