1197866880 has 320 divisors, whose sum is σ = 4890394080. Its totient is φ = 273715200.

The previous prime is 1197866861. The next prime is 1197866893. The reversal of 1197866880 is 886687911.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 361230 + ... + 364530.

Almost surely, 2^1197866880 is an apocalyptic number.

1197866880 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 1197866880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2445197040).

1197866880 is an abundant number, since it is smaller than the sum of its proper divisors (3692527200).

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

1197866880 is an equidigital number, since it uses as much as digits as its factorization.

1197866880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339 (or 3318 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1197866880 is about 34610.2135214448. The cubic root of 1197866880 is about 1062.0285350946.

The spelling of 1197866880 in words is "one billion, one hundred ninety-seven million, eight hundred sixty-six thousand, eight hundred eighty".