1161331064 has 16 divisors (see below), whose sum is σ = 2305584000. Its totient is φ = 546508672.

The previous prime is 1161331051. The next prime is 1161331069. The reversal of 1161331064 is 4601331611.

It is a super-2 number, since 2×1161331064² = 2697379680422744192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161331069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4269464 + ... + 4269735.

It is an arithmetic number, because the mean of its divisors is an integer number (144099000).

Almost surely, 2^1161331064 is an apocalyptic number.

It is an amenable number.

1161331064 is a deficient number, since it is larger than the sum of its proper divisors (1144252936).

1161331064 is a wasteful number, since it uses less digits than its factorization.

1161331064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539222 (or 8539218 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1161331064 is about 34078.3078218388. The cubic root of 1161331064 is about 1051.1193094810.

Adding to 1161331064 its reverse (4601331611), we get a palindrome (5762662675).

The spelling of 1161331064 in words is "one billion, one hundred sixty-one million, three hundred thirty-one thousand, sixty-four".