1180555145 has 16 divisors (see below), whose sum is σ = 1766233728. Its totient is φ = 735930240.

The previous prime is 1180555111. The next prime is 1180555163. The reversal of 1180555145 is 5415550811.

It is not a de Polignac number, because 1180555145 - 2⁸ = 1180554889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 1532804 + ... + 1533573.

It is an arithmetic number, because the mean of its divisors is an integer number (110389608).

Almost surely, 2^1180555145 is an apocalyptic number.

It is an amenable number.

1180555145 is a deficient number, since it is larger than the sum of its proper divisors (585678583).

1180555145 is a wasteful number, since it uses less digits than its factorization.

1180555145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066400.

The product of its (nonzero) digits is 20000, while the sum is 35.

The square root of 1180555145 is about 34359.2075723524. The cubic root of 1180555145 is about 1056.8874950481.

The spelling of 1180555145 in words is "one billion, one hundred eighty million, five hundred fifty-five thousand, one hundred forty-five".