1143556104 has 64 divisors (see below), whose sum is σ = 2966768640. Its totient is φ = 367053120.

The previous prime is 1143556103. The next prime is 1143556109. The reversal of 1143556104 is 4016553411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1143556103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65469 + ... + 81075.

It is an arithmetic number, because the mean of its divisors is an integer number (46355760).

Almost surely, 2^1143556104 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 1143556104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483384320).

1143556104 is an abundant number, since it is smaller than the sum of its proper divisors (1823212536).

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

1143556104 is a wasteful number, since it uses less digits than its factorization.

1143556104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15730 (or 15726 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1143556104 is about 33816.5063837174. The cubic root of 1143556104 is about 1045.7290164206.

The spelling of 1143556104 in words is "one billion, one hundred forty-three million, five hundred fifty-six thousand, one hundred four".