1167787980 has 216 divisors, whose sum is σ = 3769221456. Its totient is φ = 292481280.

The previous prime is 1167787967. The next prime is 1167787981. The reversal of 1167787980 is 897877611.

It is not an unprimeable number, because it can be changed into a prime (1167787981) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7438062 + ... + 7438218.

Almost surely, 2^1167787980 is an apocalyptic number.

1167787980 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 1167787980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1884610728).

1167787980 is an abundant number, since it is smaller than the sum of its proper divisors (2601433476).

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

1167787980 is a wasteful number, since it uses less digits than its factorization.

1167787980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The square root of 1167787980 is about 34172.9129574873. The cubic root of 1167787980 is about 1053.0637591499.

The spelling of 1167787980 in words is "one billion, one hundred sixty-seven million, seven hundred eighty-seven thousand, nine hundred eighty".