1161573312 has 56 divisors (see below), whose sum is σ = 3075976576. Its totient is φ = 386857728.

The previous prime is 1161573289. The next prime is 1161573313. The reversal of 1161573312 is 2133751611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161573312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161573313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333693 + ... + 337155.

Almost surely, 2^1161573312 is an apocalyptic number.

1161573312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161573312 is an abundant number, since it is smaller than the sum of its proper divisors (1914403264).

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

1161573312 is a wasteful number, since it uses less digits than its factorization.

1161573312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225 (or 5215 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 1161573312 is about 34081.8619209690. The cubic root of 1161573312 is about 1051.1923905215.

The spelling of 1161573312 in words is "one billion, one hundred sixty-one million, five hundred seventy-three thousand, three hundred twelve".