1180531158 has 16 divisors (see below), whose sum is σ = 2361696960. Its totient is φ = 393404616.

The previous prime is 1180531151. The next prime is 1180531171. The reversal of 1180531158 is 8511350811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180531151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268 + ... + 48591.

It is an arithmetic number, because the mean of its divisors is an integer number (147606060).

Almost surely, 2^1180531158 is an apocalyptic number.

1180531158 is an abundant number, since it is smaller than the sum of its proper divisors (1181165802).

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

1180531158 is a wasteful number, since it uses less digits than its factorization.

1180531158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52891.

The product of its (nonzero) digits is 4800, while the sum is 33.

The square root of 1180531158 is about 34358.8585083963. The cubic root of 1180531158 is about 1056.8803369095.

Adding to 1180531158 its reverse (8511350811), we get a palindrome (9691881969).

The spelling of 1180531158 in words is "one billion, one hundred eighty million, five hundred thirty-one thousand, one hundred fifty-eight".