1351634243 has 2 divisors, whose sum is σ = 1351634244. Its totient is φ = 1351634242.

The previous prime is 1351634239. The next prime is 1351634269. The reversal of 1351634243 is 3424361531.

It is a weak prime.

It is an emirp because it is prime and its reverse (3424361531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1351634243 - 2² = 1351634239 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1351634743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675817121 + 675817122.

It is an arithmetic number, because the mean of its divisors is an integer number (675817122).

Almost surely, 2^1351634243 is an apocalyptic number.

1351634243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351634243 is an equidigital number, since it uses as much as digits as its factorization.

1351634243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 1351634243 is about 36764.5786457563. The cubic root of 1351634243 is about 1105.6552403259.

Adding to 1351634243 its reverse (3424361531), we get a palindrome (4775995774).

The spelling of 1351634243 in words is "one billion, three hundred fifty-one million, six hundred thirty-four thousand, two hundred forty-three".