219142708 has 12 divisors (see below), whose sum is σ = 386894340. Its totient is φ = 108601472.

The previous prime is 219142681. The next prime is 219142771. The reversal of 219142708 is 807241912.

It can be written as a sum of positive squares in 2 ways, for example, as 7963684 + 211179024 = 2822^2 + 14532^2 .

It is a congruent number.

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, 241963 + ... + 242866.

It is an arithmetic number, because the mean of its divisors is an integer number (32241195).

Almost surely, 2^219142708 is an apocalyptic number.

It is an amenable number.

219142708 is a deficient number, since it is larger than the sum of its proper divisors (167751632).

219142708 is a wasteful number, since it uses less digits than its factorization.

219142708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484946 (or 484944 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 219142708 is about 14803.4694582047. The cubic root of 219142708 is about 602.8959151204.

The spelling of 219142708 in words is "two hundred nineteen million, one hundred forty-two thousand, seven hundred eight".