1163949503 has 4 divisors (see below), whose sum is σ = 1164027480. Its totient is φ = 1163871528.

The previous prime is 1163949497. The next prime is 1163949517. The reversal of 1163949503 is 3059493611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1163949503 - 2⁶ = 1163949439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163949583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8813 + ... + 49046.

It is an arithmetic number, because the mean of its divisors is an integer number (291006870).

Almost surely, 2^1163949503 is an apocalyptic number.

1163949503 is a deficient number, since it is larger than the sum of its proper divisors (77977).

1163949503 is an equidigital number, since it uses as much as digits as its factorization.

1163949503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77976.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 1163949503 is about 34116.7041637964. The cubic root of 1163949503 is about 1051.9086984693.

The spelling of 1163949503 in words is "one billion, one hundred sixty-three million, nine hundred forty-nine thousand, five hundred three".