1143605660 has 12 divisors (see below), whose sum is σ = 2401571928. Its totient is φ = 457442256.

The previous prime is 1143605641. The next prime is 1143605693. The reversal of 1143605660 is 665063411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28590122 + ... + 28590161.

It is an arithmetic number, because the mean of its divisors is an integer number (200130994).

Almost surely, 2^1143605660 is an apocalyptic number.

1143605660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143605660 is an abundant number, since it is smaller than the sum of its proper divisors (1257966268).

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

1143605660 is a wasteful number, since it uses less digits than its factorization.

1143605660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57180292 (or 57180290 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1143605660 is about 33817.2390948759. The cubic root of 1143605660 is about 1045.7441217569.

The spelling of 1143605660 in words is "one billion, one hundred forty-three million, six hundred five thousand, six hundred sixty".