1966136560 has 40 divisors (see below), whose sum is σ = 4718733696. Its totient is φ = 761084160.

The previous prime is 1966136539. The next prime is 1966136561. The reversal of 1966136560 is 656316691.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966136561) 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, 393919 + ... + 398878.

Almost surely, 2^1966136560 is an apocalyptic number.

1966136560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966136560 is an abundant number, since it is smaller than the sum of its proper divisors (2752597136).

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

1966136560 is a wasteful number, since it uses less digits than its factorization.

1966136560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792841 (or 792835 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 1966136560 is about 44341.1384608018. The cubic root of 1966136560 is about 1252.7696581293.

The spelling of 1966136560 in words is "one billion, nine hundred sixty-six million, one hundred thirty-six thousand, five hundred sixty".