1143639212 has 12 divisors (see below), whose sum is σ = 2088384816. Its totient is φ = 546957840.

The previous prime is 1143639193. The next prime is 1143639229. The reversal of 1143639212 is 2129363411.

It is a super-3 number, since 3×1143639212³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6215339 + ... + 6215522.

It is an arithmetic number, because the mean of its divisors is an integer number (174032068).

Almost surely, 2^1143639212 is an apocalyptic number.

It is an amenable number.

1143639212 is a deficient number, since it is larger than the sum of its proper divisors (944745604).

1143639212 is a wasteful number, since it uses less digits than its factorization.

1143639212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430888 (or 12430886 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 1143639212 is about 33817.7351695822. The cubic root of 1143639212 is about 1045.7543486106.

The spelling of 1143639212 in words is "one billion, one hundred forty-three million, six hundred thirty-nine thousand, two hundred twelve".