1163783680 has 40 divisors (see below), whose sum is σ = 2790359352. Its totient is φ = 465512448.

The previous prime is 1163783597. The next prime is 1163783689. The reversal of 1163783680 is 863873611.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163783689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224742 + ... + 229861.

Almost surely, 2^1163783680 is an apocalyptic number.

1163783680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163783680 is an abundant number, since it is smaller than the sum of its proper divisors (1626575672).

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

1163783680 is an frugal number, since it uses more digits than its factorization.

1163783680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454626 (or 454610 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1163783680 is about 34114.2738454155. The cubic root of 1163783680 is about 1051.8587424246.

The spelling of 1163783680 in words is "one billion, one hundred sixty-three million, seven hundred eighty-three thousand, six hundred eighty".