1163641616 has 20 divisors (see below), whose sum is σ = 2255129100. Its totient is φ = 581672832.

The previous prime is 1163641607. The next prime is 1163641621. The reversal of 1163641616 is 6161463611.

It can be written as a sum of positive squares in 2 ways, for example, as 600054016 + 563587600 = 24496^2 + 23740^2 .

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 3 ways as a sum of consecutive naturals, for example, 84290 + ... + 97118.

It is an arithmetic number, because the mean of its divisors is an integer number (112756455).

Almost surely, 2^1163641616 is an apocalyptic number.

1163641616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1163641616 is a deficient number, since it is larger than the sum of its proper divisors (1091487484).

1163641616 is a wasteful number, since it uses less digits than its factorization.

1163641616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18506 (or 18500 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 1163641616 is about 34112.1916035895. The cubic root of 1163641616 is about 1051.8159402717.

The spelling of 1163641616 in words is "one billion, one hundred sixty-three million, six hundred forty-one thousand, six hundred sixteen".