219142793 has 4 divisors (see below), whose sum is σ = 220613700. Its totient is φ = 217671888.

The previous prime is 219142783. The next prime is 219142837. The reversal of 219142793 is 397241912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7382089 + 211760704 = 2717^2 + 14552^2 .

It is a cyclic number.

It is not a de Polignac number, because 219142793 - 2⁸ = 219142537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219142783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735230 + ... + 735527.

It is an arithmetic number, because the mean of its divisors is an integer number (55153425).

Almost surely, 2^219142793 is an apocalyptic number.

It is an amenable number.

219142793 is a deficient number, since it is larger than the sum of its proper divisors (1470907).

219142793 is a wasteful number, since it uses less digits than its factorization.

219142793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470906.

The product of its digits is 27216, while the sum is 38.

The square root of 219142793 is about 14803.4723291530. The cubic root of 219142793 is about 602.8959930698.

The spelling of 219142793 in words is "two hundred nineteen million, one hundred forty-two thousand, seven hundred ninety-three".