213888948191 has 8 divisors (see below), whose sum is σ = 216177071040. Its totient is φ = 211602521088.

The previous prime is 213888948179. The next prime is 213888948209. The reversal of 213888948191 is 191849888312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213888948191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213888948151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169511 + ... + 675656.

It is an arithmetic number, because the mean of its divisors is an integer number (27022133880).

Almost surely, 2^213888948191 is an apocalyptic number.

213888948191 is a deficient number, since it is larger than the sum of its proper divisors (2288122849).

213888948191 is an equidigital number, since it uses as much as digits as its factorization.

213888948191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847873.

The product of its digits is 7962624, while the sum is 62.

The spelling of 213888948191 in words is "two hundred thirteen billion, eight hundred eighty-eight million, nine hundred forty-eight thousand, one hundred ninety-one".