1166541694 has 4 divisors (see below), whose sum is σ = 1749812544. Its totient is φ = 583270846.

The previous prime is 1166541667. The next prime is 1166541697. The reversal of 1166541694 is 4961456611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4961456611 = 1889 ⋅2626499.

It is a self number, because there is not a number n which added to its sum of digits gives 1166541694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166541697) 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 as a sum of consecutive naturals, namely, 291635422 + ... + 291635425.

It is an arithmetic number, because the mean of its divisors is an integer number (437453136).

Almost surely, 2^1166541694 is an apocalyptic number.

1166541694 is a deficient number, since it is larger than the sum of its proper divisors (583270850).

1166541694 is an equidigital number, since it uses as much as digits as its factorization.

1166541694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583270849.

The product of its digits is 155520, while the sum is 43.

The square root of 1166541694 is about 34154.6730916869. The cubic root of 1166541694 is about 1052.6890091099.

The spelling of 1166541694 in words is "one billion, one hundred sixty-six million, five hundred forty-one thousand, six hundred ninety-four".