1566156948 has 48 divisors (see below), whose sum is σ = 3813929280. Its totient is φ = 499577344.

The previous prime is 1566156931. The next prime is 1566156961. The reversal of 1566156948 is 8496516651.

It is a self number, because there is not a number n which added to its sum of digits gives 1566156948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19411 + ... + 59237.

It is an arithmetic number, because the mean of its divisors is an integer number (79456860).

Almost surely, 2^1566156948 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 1566156948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906964640).

1566156948 is an abundant number, since it is smaller than the sum of its proper divisors (2247772332).

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

1566156948 is a wasteful number, since it uses less digits than its factorization.

1566156948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39976 (or 39974 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The square root of 1566156948 is about 39574.7008579977. The cubic root of 1566156948 is about 1161.3017856783.

The spelling of 1566156948 in words is "one billion, five hundred sixty-six million, one hundred fifty-six thousand, nine hundred forty-eight".