1143672660 has 72 divisors (see below), whose sum is σ = 3736005000. Its totient is φ = 281518848.

The previous prime is 1143672617. The next prime is 1143672683. The reversal of 1143672660 is 662763411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73205136 + 1070467524 = 8556^2 + 32718^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 242035 + ... + 246714.

Almost surely, 2^1143672660 is an apocalyptic number.

1143672660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143672660 is an abundant number, since it is smaller than the sum of its proper divisors (2592332340).

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

1143672660 is a wasteful number, since it uses less digits than its factorization.

1143672660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488777 (or 488772 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1143672660 is about 33818.2296993796. The cubic root of 1143672660 is about 1045.7645435655.

The spelling of 1143672660 in words is "one billion, one hundred forty-three million, six hundred seventy-two thousand, six hundred sixty".