1163144120 has 32 divisors (see below), whose sum is σ = 2656141200. Its totient is φ = 458312448.

The previous prime is 1163144119. The next prime is 1163144159. The reversal of 1163144120 is 214413611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214325 + ... + 219684.

Almost surely, 2^1163144120 is an apocalyptic number.

1163144120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163144120 is an abundant number, since it is smaller than the sum of its proper divisors (1492997080).

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

1163144120 is a wasteful number, since it uses less digits than its factorization.

1163144120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434087 (or 434083 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1163144120 is about 34104.8987683588. The cubic root of 1163144120 is about 1051.6660233196. Note that the first 3 decimals are identical.

Adding to 1163144120 its reverse (214413611), we get a palindrome (1377557731).

The spelling of 1163144120 in words is "one billion, one hundred sixty-three million, one hundred forty-four thousand, one hundred twenty".