1166991467 has 4 divisors (see below), whose sum is σ = 1169064840. Its totient is φ = 1164918096.

The previous prime is 1166991409. The next prime is 1166991481. The reversal of 1166991467 is 7641996611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7641996611 = 1033 ⋅7397867.

It is a cyclic number.

It is not a de Polignac number, because 1166991467 - 2¹⁶ = 1166925931 is a prime.

It is a super-3 number, since 3×1166991467³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166991767) 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, 1035842 + ... + 1036967.

It is an arithmetic number, because the mean of its divisors is an integer number (292266210).

Almost surely, 2^1166991467 is an apocalyptic number.

1166991467 is a deficient number, since it is larger than the sum of its proper divisors (2073373).

1166991467 is an equidigital number, since it uses as much as digits as its factorization.

1166991467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073372.

The product of its digits is 489888, while the sum is 50.

The square root of 1166991467 is about 34161.2568123598. The cubic root of 1166991467 is about 1052.8242836736.

The spelling of 1166991467 in words is "one billion, one hundred sixty-six million, nine hundred ninety-one thousand, four hundred sixty-seven".