1161430452 has 144 divisors (see below), whose sum is σ = 3701897472. Its totient is φ = 298805760.

The previous prime is 1161430447. The next prime is 1161430477. The reversal of 1161430452 is 2540341611.

It is a happy number.

1161430452 is a `hidden beast` number, since 1 + 1 + 614 + 3 + 0 + 45 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 129993 + ... + 138639.

Almost surely, 2^1161430452 is an apocalyptic number.

1161430452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161430452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850948736).

1161430452 is an abundant number, since it is smaller than the sum of its proper divisors (2540467020).

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

1161430452 is a wasteful number, since it uses less digits than its factorization.

1161430452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8713 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1161430452 is about 34079.7660203236. The cubic root of 1161430452 is about 1051.1492939443.

The spelling of 1161430452 in words is "one billion, one hundred sixty-one million, four hundred thirty thousand, four hundred fifty-two".