218030793 has 8 divisors (see below), whose sum is σ = 291468288. Its totient is φ = 144973584.

The previous prime is 218030789. The next prime is 218030807. The reversal of 218030793 is 397030812.

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

It is not a de Polignac number, because 218030793 - 2² = 218030789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218030713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93730 + ... + 96027.

It is an arithmetic number, because the mean of its divisors is an integer number (36433536).

Almost surely, 2^218030793 is an apocalyptic number.

It is an amenable number.

218030793 is a deficient number, since it is larger than the sum of its proper divisors (73437495).

218030793 is a wasteful number, since it uses less digits than its factorization.

218030793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190143.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 218030793 is about 14765.8658059729. The cubic root of 218030793 is about 601.8745015303.

The spelling of 218030793 in words is "two hundred eighteen million, thirty thousand, seven hundred ninety-three".