1188530631145 has 16 divisors (see below), whose sum is σ = 1675578848832. Its totient is φ = 797894688960.

The previous prime is 1188530631133. The next prime is 1188530631151. The reversal of 1188530631145 is 5411360358811.

It is not a de Polignac number, because 1188530631145 - 2¹⁵ = 1188530598377 is a prime.

It is a super-2 number, since 2×1188530631145² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1188530631095 and 1188530631104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831139587 + ... + 831141016.

It is an arithmetic number, because the mean of its divisors is an integer number (104723678052).

Almost surely, 2^{1188530631145} is an apocalyptic number.

It is an amenable number.

1188530631145 is a deficient number, since it is larger than the sum of its proper divisors (487048217687).

1188530631145 is a wasteful number, since it uses less digits than its factorization.

1188530631145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662280632.

The product of its (nonzero) digits is 345600, while the sum is 46.

Adding to 1188530631145 its reverse (5411360358811), we get a palindrome (6599890989956).

The spelling of 1188530631145 in words is "one trillion, one hundred eighty-eight billion, five hundred thirty million, six hundred thirty-one thousand, one hundred forty-five".