1368213503 has 4 divisors (see below), whose sum is σ = 1440224760. Its totient is φ = 1296202248.

The previous prime is 1368213493. The next prime is 1368213619. The reversal of 1368213503 is 3053128631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1368213503 - 2⁴ = 1368213487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1368213503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368263503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36005600 + ... + 36005637.

It is an arithmetic number, because the mean of its divisors is an integer number (360056190).

Almost surely, 2^1368213503 is an apocalyptic number.

1368213503 is a deficient number, since it is larger than the sum of its proper divisors (72011257).

1368213503 is an equidigital number, since it uses as much as digits as its factorization.

1368213503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72011256.

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

The square root of 1368213503 is about 36989.3701352159. The cubic root of 1368213503 is about 1110.1575684656.

The spelling of 1368213503 in words is "one billion, three hundred sixty-eight million, two hundred thirteen thousand, five hundred three".