1181159452 has 12 divisors (see below), whose sum is σ = 2254940856. Its totient is φ = 536890640.

The previous prime is 1181159449. The next prime is 1181159459. The reversal of 1181159452 is 2549511811.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181159459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13422223 + ... + 13422310.

It is an arithmetic number, because the mean of its divisors is an integer number (187911738).

Almost surely, 2^1181159452 is an apocalyptic number.

It is an amenable number.

1181159452 is a deficient number, since it is larger than the sum of its proper divisors (1073781404).

1181159452 is a wasteful number, since it uses less digits than its factorization.

1181159452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26844548 (or 26844546 counting only the distinct ones).

The product of its digits is 14400, while the sum is 37.

The square root of 1181159452 is about 34368.0004073557. Note that the first 3 decimals coincide. The cubic root of 1181159452 is about 1057.0677987997.

The spelling of 1181159452 in words is "one billion, one hundred eighty-one million, one hundred fifty-nine thousand, four hundred fifty-two".