1167491556 has 288 divisors, whose sum is σ = 4021355520. Its totient is φ = 286934400.

The previous prime is 1167491539. The next prime is 1167491557. The reversal of 1167491556 is 6551947611.

1167491556 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 4 + 91 + 556 = 666.

It is a super-2 number, since 2×1167491556² = 2726073066662602272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1167491557) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1421626 + ... + 1422446.

It is an arithmetic number, because the mean of its divisors is an integer number (13963040).

Almost surely, 2^1167491556 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 1167491556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010677760).

1167491556 is an abundant number, since it is smaller than the sum of its proper divisors (2853863964).

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

1167491556 is a wasteful number, since it uses less digits than its factorization.

1167491556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 863 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 1167491556 is about 34168.5755629350. The cubic root of 1167491556 is about 1052.9746505695.

The spelling of 1167491556 in words is "one billion, one hundred sixty-seven million, four hundred ninety-one thousand, five hundred fifty-six".