1351043249 has 2 divisors, whose sum is σ = 1351043250. Its totient is φ = 1351043248.

The previous prime is 1351043219. The next prime is 1351043251. The reversal of 1351043249 is 9423401531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803155600 + 547887649 = 28340^2 + 23407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351043249 - 2¹⁶ = 1350977713 is a prime.

Together with 1351043251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1351043219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675521624 + 675521625.

It is an arithmetic number, because the mean of its divisors is an integer number (675521625).

Almost surely, 2^1351043249 is an apocalyptic number.

It is an amenable number.

1351043249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351043249 is an equidigital number, since it uses as much as digits as its factorization.

1351043249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1351043249 is about 36756.5402207553. The cubic root of 1351043249 is about 1105.4940697833.

The spelling of 1351043249 in words is "one billion, three hundred fifty-one million, forty-three thousand, two hundred forty-nine".