1161980316 has 216 divisors, whose sum is σ = 3662270976. Its totient is φ = 320876640.

The previous prime is 1161980299. The next prime is 1161980327. The reversal of 1161980316 is 6130891611.

It is a happy number.

1161980316 is a `hidden beast` number, since 1 + 1 + 619 + 8 + 0 + 31 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1476075 + ... + 1476861.

Almost surely, 2^1161980316 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 1161980316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831135488).

1161980316 is an abundant number, since it is smaller than the sum of its proper divisors (2500290660).

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

1161980316 is a wasteful number, since it uses less digits than its factorization.

1161980316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1161980316 is about 34087.8323746172. The cubic root of 1161980316 is about 1051.3151520504.

The spelling of 1161980316 in words is "one billion, one hundred sixty-one million, nine hundred eighty thousand, three hundred sixteen".