1161111132 has 24 divisors (see below), whose sum is σ = 3010288400. Its totient is φ = 387037008.

The previous prime is 1161111131. The next prime is 1161111137. The reversal of 1161111132 is 2311111611.

1161111132 is a `hidden beast` number, since 11 + 611 + 1 + 11 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161111131) 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, 5375407 + ... + 5375622.

Almost surely, 2^1161111132 is an apocalyptic number.

1161111132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161111132 is an abundant number, since it is smaller than the sum of its proper divisors (1849177268).

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

1161111132 is a wasteful number, since it uses less digits than its factorization.

1161111132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10751042 (or 10751034 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

The square root of 1161111132 is about 34075.0808069475. The cubic root of 1161111132 is about 1051.0529518982.

Adding to 1161111132 its reverse (2311111611), we get a palindrome (3472222743).

The spelling of 1161111132 in words is "one billion, one hundred sixty-one million, one hundred eleven thousand, one hundred thirty-two".