1163561800 has 48 divisors (see below), whose sum is σ = 2707795440. Its totient is φ = 464992320.

The previous prime is 1163561783. The next prime is 1163561813. The reversal of 1163561800 is 81653611.

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 11 ways as a sum of consecutive naturals, for example, 294639 + ... + 298561.

It is an arithmetic number, because the mean of its divisors is an integer number (56412405).

Almost surely, 2^1163561800 is an apocalyptic number.

1163561800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163561800 is an abundant number, since it is smaller than the sum of its proper divisors (1544233640).

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

1163561800 is a wasteful number, since it uses less digits than its factorization.

1163561800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422 (or 5413 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1163561800 is about 34111.0216792168. The cubic root of 1163561800 is about 1051.7918911545.

The spelling of 1163561800 in words is "one billion, one hundred sixty-three million, five hundred sixty-one thousand, eight hundred".