1143855210 has 16 divisors (see below), whose sum is σ = 2745252576. Its totient is φ = 305028048.

The previous prime is 1143855203. The next prime is 1143855211. The reversal of 1143855210 is 125583411.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 38128507 = 1143855210 / (1 + 1 + 4 + 3 + 8 + 5 + 5 + 2 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (1143855211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19064224 + ... + 19064283.

It is an arithmetic number, because the mean of its divisors is an integer number (171578286).

Almost surely, 2^1143855210 is an apocalyptic number.

1143855210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143855210 is an abundant number, since it is smaller than the sum of its proper divisors (1601397366).

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

1143855210 is a wasteful number, since it uses less digits than its factorization.

1143855210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38128517.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 1143855210 is about 33820.9285798010. The cubic root of 1143855210 is about 1045.8201813273.

The spelling of 1143855210 in words is "one billion, one hundred forty-three million, eight hundred fifty-five thousand, two hundred ten".