1166420603 has 16 divisors (see below), whose sum is σ = 1209509280. Its totient is φ = 1124121600.

The previous prime is 1166420587. The next prime is 1166420611. The reversal of 1166420603 is 3060246611.

It is a happy number.

It is not a de Polignac number, because 1166420603 - 2⁴ = 1166420587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166420683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1578008 + ... + 1578746.

It is an arithmetic number, because the mean of its divisors is an integer number (75594330).

Almost surely, 2^1166420603 is an apocalyptic number.

1166420603 is a deficient number, since it is larger than the sum of its proper divisors (43088677).

1166420603 is a wasteful number, since it uses less digits than its factorization.

1166420603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

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

The square root of 1166420603 is about 34152.9003599987. The cubic root of 1166420603 is about 1052.6525836149.

The spelling of 1166420603 in words is "one billion, one hundred sixty-six million, four hundred twenty thousand, six hundred three".