1566163144 has 64 divisors (see below), whose sum is σ = 3682506240. Its totient is φ = 607875840.

The previous prime is 1566163117. The next prime is 1566163147. The reversal of 1566163144 is 4413616651.

It is not an unprimeable number, because it can be changed into a prime (1566163147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18289 + ... + 58879.

It is an arithmetic number, because the mean of its divisors is an integer number (57539160).

Almost surely, 2^1566163144 is an apocalyptic number.

1566163144 is a gapful number since it is divisible by the number (14) 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 1566163144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841253120).

1566163144 is an abundant number, since it is smaller than the sum of its proper divisors (2116343096).

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

1566163144 is a wasteful number, since it uses less digits than its factorization.

1566163144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40670 (or 40666 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 1566163144 is about 39574.7791402555. The cubic root of 1566163144 is about 1161.3033171162.

Adding to 1566163144 its reverse (4413616651), we get a palindrome (5979779795).

The spelling of 1566163144 in words is "one billion, five hundred sixty-six million, one hundred sixty-three thousand, one hundred forty-four".