1181642044 has 48 divisors (see below), whose sum is σ = 2282305536. Its totient is φ = 530856000.

The previous prime is 1181642003. The next prime is 1181642047. The reversal of 1181642044 is 4402461811.

It is a junction number, because it is equal to n+sod(n) for n = 1181641997 and 1181642015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181642047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946389 + ... + 1946995.

It is an arithmetic number, because the mean of its divisors is an integer number (47548032).

Almost surely, 2^1181642044 is an apocalyptic number.

It is an amenable number.

1181642044 is a deficient number, since it is larger than the sum of its proper divisors (1100663492).

1181642044 is a wasteful number, since it uses less digits than its factorization.

1181642044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1181642044 is about 34375.0206399938. The cubic root of 1181642044 is about 1057.2117429563.

The spelling of 1181642044 in words is "one billion, one hundred eighty-one million, six hundred forty-two thousand, forty-four".