1966766140 has 12 divisors (see below), whose sum is σ = 4130208936. Its totient is φ = 786706448.

The previous prime is 1966766119. The next prime is 1966766149. The reversal of 1966766140 is 416676691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966766149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49169134 + ... + 49169173.

It is an arithmetic number, because the mean of its divisors is an integer number (344184078).

Almost surely, 2^1966766140 is an apocalyptic number.

1966766140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966766140 is an abundant number, since it is smaller than the sum of its proper divisors (2163442796).

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

1966766140 is a wasteful number, since it uses less digits than its factorization.

1966766140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98338316 (or 98338314 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 1966766140 is about 44348.2371690240. The cubic root of 1966766140 is about 1252.9033610413.

The spelling of 1966766140 in words is "one billion, nine hundred sixty-six million, seven hundred sixty-six thousand, one hundred forty".