1566402036 has 12 divisors (see below), whose sum is σ = 3654938112. Its totient is φ = 522134008.

The previous prime is 1566402023. The next prime is 1566402053. The reversal of 1566402036 is 6302046651.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1566401988 and 1566402006.

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 3 ways as a sum of consecutive naturals, for example, 65266740 + ... + 65266763.

It is an arithmetic number, because the mean of its divisors is an integer number (304578176).

Almost surely, 2^1566402036 is an apocalyptic number.

It is an amenable number.

1566402036 is an abundant number, since it is smaller than the sum of its proper divisors (2088536076).

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

1566402036 is a wasteful number, since it uses less digits than its factorization.

1566402036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130533510 (or 130533508 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1566402036 is about 39577.7972605854. The cubic root of 1566402036 is about 1161.3623599153.

Adding to 1566402036 its reverse (6302046651), we get a palindrome (7868448687).

The spelling of 1566402036 in words is "one billion, five hundred sixty-six million, four hundred two thousand, thirty-six".