1161492688 has 20 divisors (see below), whose sum is σ = 2327992740. Its totient is φ = 560720384.

The previous prime is 1161492677. The next prime is 1161492733. The reversal of 1161492688 is 8862941611.

It can be written as a sum of positive squares in 2 ways, for example, as 862479424 + 299013264 = 29368^2 + 17292^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251145 + ... + 1252072.

It is an arithmetic number, because the mean of its divisors is an integer number (116399637).

Almost surely, 2^1161492688 is an apocalyptic number.

It is an amenable number.

1161492688 is an abundant number, since it is smaller than the sum of its proper divisors (1166500052).

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

1161492688 is a wasteful number, since it uses less digits than its factorization.

1161492688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503254 (or 2503248 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 1161492688 is about 34080.6791012151. The cubic root of 1161492688 is about 1051.1680691133.

The spelling of 1161492688 in words is "one billion, one hundred sixty-one million, four hundred ninety-two thousand, six hundred eighty-eight".