1365563444 has 48 divisors (see below), whose sum is σ = 2791248768. Its totient is φ = 572427648.

The previous prime is 1365563443. The next prime is 1365563449. The reversal of 1365563444 is 4443655631.

It is a super-2 number, since 2×1365563444² = 3729527039178282272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365563443) 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 15 ways as a sum of consecutive naturals, for example, 552299 + ... + 554765.

It is an arithmetic number, because the mean of its divisors is an integer number (58151016).

Almost surely, 2^1365563444 is an apocalyptic number.

1365563444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1365563444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395624384).

1365563444 is an abundant number, since it is smaller than the sum of its proper divisors (1425685324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1365563444 is a wasteful number, since it uses less digits than its factorization.

1365563444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2902 counting only the distinct ones).

The product of its digits is 518400, while the sum is 41.

The square root of 1365563444 is about 36953.5308732467. The cubic root of 1365563444 is about 1109.4403596104.

The spelling of 1365563444 in words is "one billion, three hundred sixty-five million, five hundred sixty-three thousand, four hundred forty-four".