1161049503 has 4 divisors (see below), whose sum is σ = 1548066008. Its totient is φ = 774033000.

The previous prime is 1161049501. The next prime is 1161049517. The reversal of 1161049503 is 3059401611.

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

It is not a de Polignac number, because 1161049503 - 2¹ = 1161049501 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 (1161049501) 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, 193508248 + ... + 193508253.

It is an arithmetic number, because the mean of its divisors is an integer number (387016502).

Almost surely, 2^1161049503 is an apocalyptic number.

1161049503 is a deficient number, since it is larger than the sum of its proper divisors (387016505).

1161049503 is an equidigital number, since it uses as much as digits as its factorization.

1161049503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387016504.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1161049503 is about 34074.1764830788. The cubic root of 1161049503 is about 1051.0343557775.

The spelling of 1161049503 in words is "one billion, one hundred sixty-one million, forty-nine thousand, five hundred three".