1366213603 has 8 divisors (see below), whose sum is σ = 1400021280. Its totient is φ = 1332429120.

The previous prime is 1366213579. The next prime is 1366213613. The reversal of 1366213603 is 3063126631.

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

It is a cyclic number.

It is not a de Polignac number, because 1366213603 - 2⁹ = 1366213091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366213613) 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 in 7 ways as a sum of consecutive naturals, for example, 223593 + ... + 229621.

It is an arithmetic number, because the mean of its divisors is an integer number (175002660).

Almost surely, 2^1366213603 is an apocalyptic number.

1366213603 is a deficient number, since it is larger than the sum of its proper divisors (33807677).

1366213603 is an equidigital number, since it uses as much as digits as its factorization.

1366213603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11597.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1366213603 is about 36962.3268071695. The cubic root of 1366213603 is about 1109.6164037172.

The spelling of 1366213603 in words is "one billion, three hundred sixty-six million, two hundred thirteen thousand, six hundred three".