1368001253 has 8 divisors (see below), whose sum is σ = 1415950200. Its totient is φ = 1320104128.

The previous prime is 1368001247. The next prime is 1368001301. The reversal of 1368001253 is 3521008631.

It can be written as a sum of positive squares in 4 ways, for example, as 332929 + 1367668324 = 577^2 + 36982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1368001253 - 2²² = 1363806949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368001753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45263 + ... + 69171.

It is an arithmetic number, because the mean of its divisors is an integer number (176993775).

Almost surely, 2^1368001253 is an apocalyptic number.

It is an amenable number.

1368001253 is a deficient number, since it is larger than the sum of its proper divisors (47948947).

1368001253 is a wasteful number, since it uses less digits than its factorization.

1368001253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25911.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1368001253 is about 36986.5009564300. The cubic root of 1368001253 is about 1110.1001595089.

Adding to 1368001253 its reverse (3521008631), we get a palindrome (4889009884).

The spelling of 1368001253 in words is "one billion, three hundred sixty-eight million, one thousand, two hundred fifty-three".