1166554499 has 4 divisors (see below), whose sum is σ = 1272604920. Its totient is φ = 1060504080.

The previous prime is 1166554471. The next prime is 1166554531. The reversal of 1166554499 is 9944556611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1166554499 - 2¹² = 1166550403 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1166554699) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53025194 + ... + 53025215.

It is an arithmetic number, because the mean of its divisors is an integer number (318151230).

Almost surely, 2^1166554499 is an apocalyptic number.

1166554499 is a deficient number, since it is larger than the sum of its proper divisors (106050421).

1166554499 is a wasteful number, since it uses less digits than its factorization.

1166554499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106050420.

The product of its digits is 1166400, while the sum is 50.

The square root of 1166554499 is about 34154.8605472193. The cubic root of 1166554499 is about 1052.6928608463.

The spelling of 1166554499 in words is "one billion, one hundred sixty-six million, five hundred fifty-four thousand, four hundred ninety-nine".