1966931680 has 96 divisors (see below), whose sum is σ = 5590287360. Its totient is φ = 638876160.

The previous prime is 1966931669. The next prime is 1966931683. The reversal of 1966931680 is 861396691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966931683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24936 + ... + 67495.

It is an arithmetic number, because the mean of its divisors is an integer number (58232160).

Almost surely, 2^1966931680 is an apocalyptic number.

1966931680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966931680 is an abundant number, since it is smaller than the sum of its proper divisors (3623355680).

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

1966931680 is a wasteful number, since it uses less digits than its factorization.

1966931680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92472 (or 92464 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 1966931680 is about 44350.1034948060. The cubic root of 1966931680 is about 1252.9385117725.

The spelling of 1966931680 in words is "one billion, nine hundred sixty-six million, nine hundred thirty-one thousand, six hundred eighty".