1163873656 has 64 divisors (see below), whose sum is σ = 2436852960. Its totient is φ = 516672000.

The previous prime is 1163873653. The next prime is 1163873687. The reversal of 1163873656 is 6563783611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163873651) 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, 842086 + ... + 843466.

Almost surely, 2^1163873656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163873656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218426480).

1163873656 is an abundant number, since it is smaller than the sum of its proper divisors (1272979304).

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

1163873656 is a wasteful number, since it uses less digits than its factorization.

1163873656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616 (or 1612 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 1163873656 is about 34115.5925641048. The cubic root of 1163873656 is about 1051.8858492959.

The spelling of 1163873656 in words is "one billion, one hundred sixty-three million, eight hundred seventy-three thousand, six hundred fifty-six".