1163442140 has 48 divisors (see below), whose sum is σ = 2797604544. Its totient is φ = 398131200.

The previous prime is 1163442109. The next prime is 1163442151. The reversal of 1163442140 is 412443611.

It is a happy number.

It is a super-2 number, since 2×1163442140² = 2707195226255559200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 68060 + ... + 83420.

It is an arithmetic number, because the mean of its divisors is an integer number (58283428).

Almost surely, 2^1163442140 is an apocalyptic number.

1163442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163442140 is an abundant number, since it is smaller than the sum of its proper divisors (1634162404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1163442140 is a wasteful number, since it uses less digits than its factorization.

1163442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15918 (or 15916 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1163442140 is about 34109.2676555801. The cubic root of 1163442140 is about 1051.7558347020.

Adding to 1163442140 its reverse (412443611), we get a palindrome (1575885751).

The spelling of 1163442140 in words is "one billion, one hundred sixty-three million, four hundred forty-two thousand, one hundred forty".