1564981012 has 36 divisors (see below), whose sum is σ = 3191264244. Its totient is φ = 669567360.

The previous prime is 1564981007. The next prime is 1564981013. The reversal of 1564981012 is 2101894651.

It can be written as a sum of positive squares in 2 ways, for example, as 518199696 + 1046781316 = 22764^2 + 32354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1564981013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114462 + ... + 127402.

It is an arithmetic number, because the mean of its divisors is an integer number (88646229).

Almost surely, 2^1564981012 is an apocalyptic number.

It is an amenable number.

1564981012 is an abundant number, since it is smaller than the sum of its proper divisors (1626283232).

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

1564981012 is a wasteful number, since it uses less digits than its factorization.

1564981012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13576 (or 13567 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1564981012 is about 39559.8408995790. The cubic root of 1564981012 is about 1161.0110616210.

The spelling of 1564981012 in words is "one billion, five hundred sixty-four million, nine hundred eighty-one thousand, twelve".