1178997120 has 672 divisors, whose sum is σ = 5097139920. Its totient is φ = 255301632.

The previous prime is 1178997097. The next prime is 1178997161. The reversal of 1178997120 is 217998711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (672).

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 83 ways as a sum of consecutive naturals, for example, 62052471 + ... + 62052489.

Almost surely, 2^1178997120 is an apocalyptic number.

1178997120 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 1178997120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2548569960).

1178997120 is an abundant number, since it is smaller than the sum of its proper divisors (3918142800).

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

1178997120 is an frugal number, since it uses more digits than its factorization.

1178997120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

The square root of 1178997120 is about 34336.5274889585. The cubic root of 1178997120 is about 1056.4223517173.

The spelling of 1178997120 in words is "one billion, one hundred seventy-eight million, nine hundred ninety-seven thousand, one hundred twenty".