1536643056 has 120 divisors (see below), whose sum is σ = 4541816944. Its totient is φ = 444948480.

The previous prime is 1536643037. The next prime is 1536643079. The reversal of 1536643056 is 6503466351.

It is a happy number.

It is a super-2 number, since 2×1536643056² = 4722543763106038272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 176076 + ... + 184596.

Almost surely, 2^1536643056 is an apocalyptic number.

1536643056 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 1536643056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270908472).

1536643056 is an abundant number, since it is smaller than the sum of its proper divisors (3005173888).

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

1536643056 is a wasteful number, since it uses less digits than its factorization.

1536643056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579 (or 8556 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1536643056 is about 39200.0389795725. The cubic root of 1536643056 is about 1153.9606489269.

The spelling of 1536643056 in words is "one billion, five hundred thirty-six million, six hundred forty-three thousand, fifty-six".