1966935864 has 64 divisors (see below), whose sum is σ = 5162112000. Its totient is φ = 623727360.

The previous prime is 1966935863. The next prime is 1966935889. The reversal of 1966935864 is 4685396691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966935863) 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 15 ways as a sum of consecutive naturals, for example, 21492 + ... + 66300.

It is an arithmetic number, because the mean of its divisors is an integer number (80658000).

Almost surely, 2^1966935864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1966935864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2581056000).

1966935864 is an abundant number, since it is smaller than the sum of its proper divisors (3195176136).

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

1966935864 is a wasteful number, since it uses less digits than its factorization.

1966935864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44908 (or 44904 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The square root of 1966935864 is about 44350.1506649076. The cubic root of 1966935864 is about 1252.9394001767.

The spelling of 1966935864 in words is "one billion, nine hundred sixty-six million, nine hundred thirty-five thousand, eight hundred sixty-four".