1966759940 has 24 divisors (see below), whose sum is σ = 4132743552. Its totient is φ = 786218720.

The previous prime is 1966759913. The next prime is 1966759943. The reversal of 1966759940 is 499576691.

It is not an unprimeable number, because it can be changed into a prime (1966759943) 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, 3845 + ... + 62835.

It is an arithmetic number, because the mean of its divisors is an integer number (172197648).

Almost surely, 2^1966759940 is an apocalyptic number.

1966759940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966759940 is an abundant number, since it is smaller than the sum of its proper divisors (2165983612).

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

1966759940 is a wasteful number, since it uses less digits than its factorization.

1966759940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60667 (or 60665 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 1966759940 is about 44348.1672676561. The cubic root of 1966759940 is about 1252.9020444962.

The spelling of 1966759940 in words is "one billion, nine hundred sixty-six million, seven hundred fifty-nine thousand, nine hundred forty".