1363643456 has 56 divisors (see below), whose sum is σ = 3108447936. Its totient is φ = 581414400.

The previous prime is 1363643453. The next prime is 1363643467. The reversal of 1363643456 is 6543463631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (1363643453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80531 + ... + 95981.

Almost surely, 2^1363643456 is an apocalyptic number.

1363643456 is a gapful number since it is divisible by the number (16) 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 1363643456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554223968).

1363643456 is an abundant number, since it is smaller than the sum of its proper divisors (1744804480).

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

1363643456 is a wasteful number, since it uses less digits than its factorization.

1363643456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15667 (or 15657 counting only the distinct ones).

The product of its digits is 466560, while the sum is 41.

The square root of 1363643456 is about 36927.5433247326. The cubic root of 1363643456 is about 1108.9201564463.

The spelling of 1363643456 in words is "one billion, three hundred sixty-three million, six hundred forty-three thousand, four hundred fifty-six".