1143540660 has 24 divisors (see below), whose sum is σ = 3201914016. Its totient is φ = 304944160.

The previous prime is 1143540659. The next prime is 1143540719. The reversal of 1143540660 is 660453411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9529446 + ... + 9529565.

It is an arithmetic number, because the mean of its divisors is an integer number (133413084).

Almost surely, 2^1143540660 is an apocalyptic number.

1143540660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143540660 is an abundant number, since it is smaller than the sum of its proper divisors (2058373356).

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

1143540660 is a wasteful number, since it uses less digits than its factorization.

1143540660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059023 (or 19059021 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1143540660 is about 33816.2780329237. The cubic root of 1143540660 is about 1045.7243087921.

The spelling of 1143540660 in words is "one billion, one hundred forty-three million, five hundred forty thousand, six hundred sixty".