1166203406 has 4 divisors (see below), whose sum is σ = 1749305112. Its totient is φ = 583101702.

The previous prime is 1166203373. The next prime is 1166203421. The reversal of 1166203406 is 6043026611.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 291550850 + ... + 291550853.

It is an arithmetic number, because the mean of its divisors is an integer number (437326278).

Almost surely, 2^1166203406 is an apocalyptic number.

1166203406 is a deficient number, since it is larger than the sum of its proper divisors (583101706).

1166203406 is an equidigital number, since it uses as much as digits as its factorization.

1166203406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583101705.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1166203406 is about 34149.7204380944. The cubic root of 1166203406 is about 1052.5872420691.

The spelling of 1166203406 in words is "one billion, one hundred sixty-six million, two hundred three thousand, four hundred six".