1966428488 has 32 divisors (see below), whose sum is σ = 3987014400. Its totient is φ = 905686272.

The previous prime is 1966428481. The next prime is 1966428551. The reversal of 1966428488 is 8848246691.

It is a super-3 number, since 3×1966428488³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1966428481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147428 + ... + 160211.

It is an arithmetic number, because the mean of its divisors is an integer number (124594200).

Almost surely, 2^1966428488 is an apocalyptic number.

It is an amenable number.

1966428488 is an abundant number, since it is smaller than the sum of its proper divisors (2020585912).

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

1966428488 is a wasteful number, since it uses less digits than its factorization.

1966428488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307709 (or 307705 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The square root of 1966428488 is about 44344.4301801252. The cubic root of 1966428488 is about 1252.8316579668.

The spelling of 1966428488 in words is "one billion, nine hundred sixty-six million, four hundred twenty-eight thousand, four hundred eighty-eight".