1966428552 has 128 divisors (see below), whose sum is σ = 5537548800. Its totient is φ = 576729600.

The previous prime is 1966428551. The next prime is 1966428623. The reversal of 1966428552 is 2558246691.

It is not an unprimeable number, because it can be changed into a prime (1966428551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1503883 + ... + 1505189.

It is an arithmetic number, because the mean of its divisors is an integer number (43262100).

Almost surely, 2^1966428552 is an apocalyptic number.

1966428552 is a gapful number since it is divisible by the number (12) 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 1966428552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2768774400).

1966428552 is an abundant number, since it is smaller than the sum of its proper divisors (3571120248).

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

1966428552 is a wasteful number, since it uses less digits than its factorization.

1966428552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1503 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The square root of 1966428552 is about 44344.4309017491. The cubic root of 1966428552 is about 1252.8316715585.

The spelling of 1966428552 in words is "one billion, nine hundred sixty-six million, four hundred twenty-eight thousand, five hundred fifty-two".