1180145618531 has 16 divisors (see below), whose sum is σ = 1330690099200. Its totient is φ = 1036900915200.

The previous prime is 1180145618527. The next prime is 1180145618537. The reversal of 1180145618531 is 1358165410811.

It is a cyclic number.

It is not a de Polignac number, because 1180145618531 - 2² = 1180145618527 is a prime.

It is a super-2 number, since 2×1180145618531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1180145618537) by changing a digit.

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, 1987991 + ... + 2512448.

It is an arithmetic number, because the mean of its divisors is an integer number (83168131200).

Almost surely, 2^{1180145618531} is an apocalyptic number.

1180145618531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1180145618531 is a deficient number, since it is larger than the sum of its proper divisors (150544480669).

1180145618531 is a wasteful number, since it uses less digits than its factorization.

1180145618531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501250.

The product of its (nonzero) digits is 115200, while the sum is 44.

The spelling of 1180145618531 in words is "one trillion, one hundred eighty billion, one hundred forty-five million, six hundred eighteen thousand, five hundred thirty-one".