1161330612 has 24 divisors (see below), whose sum is σ = 2918215776. Its totient is φ = 357332448.

The previous prime is 1161330529. The next prime is 1161330641. The reversal of 1161330612 is 2160331611.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3722058 + ... + 3722369.

It is an arithmetic number, because the mean of its divisors is an integer number (121592324).

Almost surely, 2^1161330612 is an apocalyptic number.

1161330612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161330612 is an abundant number, since it is smaller than the sum of its proper divisors (1756885164).

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

1161330612 is a wasteful number, since it uses less digits than its factorization.

1161330612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7444447 (or 7444445 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1161330612 is about 34078.3011900535. The cubic root of 1161330612 is about 1051.1191731128.

Subtracting 1161330612 from its reverse (2160331611), we obtain a palindrome (999000999).

The spelling of 1161330612 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, six hundred twelve".