1161430144 has 48 divisors (see below), whose sum is σ = 2691562230. Its totient is φ = 497753088.

The previous prime is 1161430133. The next prime is 1161430147. The reversal of 1161430144 is 4410341611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1029639744 + 131790400 = 32088^2 + 11480^2 .

It is not an unprimeable number, because it can be changed into a prime (1161430147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86317 + ... + 98860.

Almost surely, 2^1161430144 is an apocalyptic number.

1161430144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1161430144 is an abundant number, since it is smaller than the sum of its proper divisors (1530132086).

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

1161430144 is an equidigital number, since it uses as much as digits as its factorization.

1161430144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185205 (or 185186 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1161430144 is about 34079.7615015129. The cubic root of 1161430144 is about 1051.1492010261.

Adding to 1161430144 its reverse (4410341611), we get a palindrome (5571771755).

The spelling of 1161430144 in words is "one billion, one hundred sixty-one million, four hundred thirty thousand, one hundred forty-four".