1216006143 has 8 divisors (see below), whose sum is σ = 1768736256. Its totient is φ = 736973400.

The previous prime is 1216006139. The next prime is 1216006153. The reversal of 1216006143 is 3416006121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1216006143 - 2² = 1216006139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216006123) 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, 18424303 + ... + 18424368.

It is an arithmetic number, because the mean of its divisors is an integer number (221092032).

Almost surely, 2^1216006143 is an apocalyptic number.

1216006143 is a deficient number, since it is larger than the sum of its proper divisors (552730113).

1216006143 is a wasteful number, since it uses less digits than its factorization.

1216006143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36848685.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1216006143 is about 34871.2796295175. The cubic root of 1216006143 is about 1067.3624568532.

The spelling of 1216006143 in words is "one billion, two hundred sixteen million, six thousand, one hundred forty-three".