1167891072 has 32 divisors (see below), whose sum is σ = 3102211680. Its totient is φ = 389296896.

The previous prime is 1167891071. The next prime is 1167891077. The reversal of 1167891072 is 2701987611.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1167891071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520308 + ... + 1521075.

It is an arithmetic number, because the mean of its divisors is an integer number (96944115).

Almost surely, 2^1167891072 is an apocalyptic number.

1167891072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1167891072 is an abundant number, since it is smaller than the sum of its proper divisors (1934320608).

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

1167891072 is an equidigital number, since it uses as much as digits as its factorization.

1167891072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041400 (or 3041388 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 42.

The square root of 1167891072 is about 34174.4213118525. The cubic root of 1167891072 is about 1053.0947462972.

The spelling of 1167891072 in words is "one billion, one hundred sixty-seven million, eight hundred ninety-one thousand, seventy-two".