1188129053 has 4 divisors (see below), whose sum is σ = 1190087040. Its totient is φ = 1186171068.

The previous prime is 1188129029. The next prime is 1188129067. The reversal of 1188129053 is 3509218811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3509218811 = 7 ⋅501316973.

It is a cyclic number.

It is not a de Polignac number, because 1188129053 - 2⁸ = 1188128797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1188128998 and 1188129016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188129013) 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, 978083 + ... + 979296.

It is an arithmetic number, because the mean of its divisors is an integer number (297521760).

Almost surely, 2^1188129053 is an apocalyptic number.

It is an amenable number.

1188129053 is a deficient number, since it is larger than the sum of its proper divisors (1957987).

1188129053 is an equidigital number, since it uses as much as digits as its factorization.

1188129053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957986.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 1188129053 is about 34469.2479320336. The cubic root of 1188129053 is about 1059.1428495496.

The spelling of 1188129053 in words is "one billion, one hundred eighty-eight million, one hundred twenty-nine thousand, fifty-three".