1966097280 has 256 divisors, whose sum is σ = 7203778560. Its totient is φ = 446791680.

The previous prime is 1966097261. The next prime is 1966097291. The reversal of 1966097280 is 827906691.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3238737 + ... + 3239343.

It is an arithmetic number, because the mean of its divisors is an integer number (28139760).

Almost surely, 2^1966097280 is an apocalyptic number.

1966097280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1966097280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3601889280).

1966097280 is an abundant number, since it is smaller than the sum of its proper divisors (5237681280).

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

1966097280 is a wasteful number, since it uses less digits than its factorization.

1966097280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1966097280 is about 44340.6955290510. The cubic root of 1966097280 is about 1252.7613153517.

The spelling of 1966097280 in words is "one billion, nine hundred sixty-six million, ninety-seven thousand, two hundred eighty".