1163142503 has 4 divisors (see below), whose sum is σ = 1163223360. Its totient is φ = 1163061648.

The previous prime is 1163142479. The next prime is 1163142509. The reversal of 1163142503 is 3052413611.

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 1163142503 - 2²⁰ = 1162093927 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 (1163142509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12350 + ... + 49787.

It is an arithmetic number, because the mean of its divisors is an integer number (290805840).

Almost surely, 2^1163142503 is an apocalyptic number.

1163142503 is a deficient number, since it is larger than the sum of its proper divisors (80857).

1163142503 is an equidigital number, since it uses as much as digits as its factorization.

1163142503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80856.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1163142503 is about 34104.8750620787. The cubic root of 1163142503 is about 1051.6655359782.

The spelling of 1163142503 in words is "one billion, one hundred sixty-three million, one hundred forty-two thousand, five hundred three".