1161327330 has 48 divisors (see below), whose sum is σ = 3123577080. Its totient is φ = 299007744.

The previous prime is 1161327283. The next prime is 1161327373. The reversal of 1161327330 is 337231611.

1161327330 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 327 + 330 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1155524049 + 5803281 = 33993^2 + 2409^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1161327294 and 1161327303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219867 + ... + 225086.

Almost surely, 2^1161327330 is an apocalyptic number.

1161327330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161327330 is an abundant number, since it is smaller than the sum of its proper divisors (1962249750).

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

1161327330 is a wasteful number, since it uses less digits than its factorization.

1161327330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444995 (or 444992 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 1161327330 is about 34078.2530362106. The cubic root of 1161327330 is about 1051.1181829336.

Adding to 1161327330 its reverse (337231611), we get a palindrome (1498558941).

The spelling of 1161327330 in words is "one billion, one hundred sixty-one million, three hundred twenty-seven thousand, three hundred thirty".