1566746916 has 96 divisors (see below), whose sum is σ = 4408642560. Its totient is φ = 423045504.

The previous prime is 1566746879. The next prime is 1566746941. The reversal of 1566746916 is 6196476651.

It is a super-2 number, since 2×1566746916² = 4909391797591022112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 833770 + ... + 835646.

It is an arithmetic number, because the mean of its divisors is an integer number (45923360).

Almost surely, 2^1566746916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1566746916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204321280).

1566746916 is an abundant number, since it is smaller than the sum of its proper divisors (2841895644).

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

1566746916 is a wasteful number, since it uses less digits than its factorization.

1566746916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2431 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 1566746916 is about 39582.1540090986. The cubic root of 1566746916 is about 1161.4475873451.

The spelling of 1566746916 in words is "one billion, five hundred sixty-six million, seven hundred forty-six thousand, nine hundred sixteen".