1196921880 has 512 divisors, whose sum is σ = 5121792000. Its totient is φ = 241367040.

The previous prime is 1196921861. The next prime is 1196921927. The reversal of 1196921880 is 881296911.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3076726 + ... + 3077114.

It is an arithmetic number, because the mean of its divisors is an integer number (10003500).

Almost surely, 2^1196921880 is an apocalyptic number.

1196921880 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 1196921880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2560896000).

1196921880 is an abundant number, since it is smaller than the sum of its proper divisors (3924870120).

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

1196921880 is a wasteful number, since it uses less digits than its factorization.

1196921880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 1196921880 is about 34596.5587884113. The cubic root of 1196921880 is about 1061.7491826844.

The spelling of 1196921880 in words is "one billion, one hundred ninety-six million, nine hundred twenty-one thousand, eight hundred eighty".