1566481016 has 32 divisors (see below), whose sum is σ = 2964654000. Its totient is φ = 775931136.

The previous prime is 1566481009. The next prime is 1566481027. The reversal of 1566481016 is 6101846651.

It is a super-4 number, since 4×1566481016⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677270 + ... + 679578.

Almost surely, 2^1566481016 is an apocalyptic number.

It is an amenable number.

1566481016 is a deficient number, since it is larger than the sum of its proper divisors (1398172984).

1566481016 is a wasteful number, since it uses less digits than its factorization.

1566481016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1566481016 is about 39578.7950296620. The cubic root of 1566481016 is about 1161.3818787139.

The spelling of 1566481016 in words is "one billion, five hundred sixty-six million, four hundred eighty-one thousand, sixteen".