1966133568 has 56 divisors (see below), whose sum is σ = 5945217472. Its totient is φ = 561752064.

The previous prime is 1966133567. The next prime is 1966133573. The reversal of 1966133568 is 8653316691.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966133567) 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, 730105 + ... + 732792.

Almost surely, 2^1966133568 is an apocalyptic number.

It is an amenable number.

1966133568 is an abundant number, since it is smaller than the sum of its proper divisors (3979083904).

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

1966133568 is a wasteful number, since it uses less digits than its factorization.

1966133568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462919 (or 1462909 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The square root of 1966133568 is about 44341.1047223679. The cubic root of 1966133568 is about 1252.7690226548.

The spelling of 1966133568 in words is "one billion, nine hundred sixty-six million, one hundred thirty-three thousand, five hundred sixty-eight".