1181448916 has 6 divisors (see below), whose sum is σ = 2067535610. Its totient is φ = 590724456.

The previous prime is 1181448913. The next prime is 1181448941. The reversal of 1181448916 is 6198441811.

It can be written as a sum of positive squares in only one way, i.e., 948886416 + 232562500 = 30804^2 + 15250^2 .

It is a super-2 number, since 2×1181448916² = 2791643082235150112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181448911) 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 as a sum of consecutive naturals, namely, 147681111 + ... + 147681118.

Almost surely, 2^1181448916 is an apocalyptic number.

It is an amenable number.

1181448916 is a deficient number, since it is larger than the sum of its proper divisors (886086694).

1181448916 is a wasteful number, since it uses less digits than its factorization.

1181448916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295362233 (or 295362231 counting only the distinct ones).

The product of its digits is 55296, while the sum is 43.

The square root of 1181448916 is about 34372.2113923443. The cubic root of 1181448916 is about 1057.1541427958.

The spelling of 1181448916 in words is "one billion, one hundred eighty-one million, four hundred forty-eight thousand, nine hundred sixteen".