1365216263 has 8 divisors (see below), whose sum is σ = 1445847408. Its totient is φ = 1284621184.

The previous prime is 1365216257. The next prime is 1365216271. The reversal of 1365216263 is 3626125631.

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

It is not a de Polignac number, because 1365216263 - 2⁶ = 1365216199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365216763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132620 + ... + 142542.

It is an arithmetic number, because the mean of its divisors is an integer number (180730926).

Almost surely, 2^1365216263 is an apocalyptic number.

1365216263 is a deficient number, since it is larger than the sum of its proper divisors (80631145).

1365216263 is an equidigital number, since it uses as much as digits as its factorization.

1365216263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18033.

The product of its digits is 38880, while the sum is 35.

The square root of 1365216263 is about 36948.8330397592. The cubic root of 1365216263 is about 1109.3463302283.

The spelling of 1365216263 in words is "one billion, three hundred sixty-five million, two hundred sixteen thousand, two hundred sixty-three".