1928381818213 has 8 divisors (see below), whose sum is σ = 1929444088320. Its totient is φ = 1927319845920.

The previous prime is 1928381818201. The next prime is 1928381818267. The reversal of 1928381818213 is 3128181838291.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1928381818213 - 2³³ = 1919791883621 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 (1928381918213) 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, 13557681 + ... + 13699177.

It is an arithmetic number, because the mean of its divisors is an integer number (241180511040).

Almost surely, 2^{1928381818213} is an apocalyptic number.

It is an amenable number.

1928381818213 is a deficient number, since it is larger than the sum of its proper divisors (1062270107).

1928381818213 is a wasteful number, since it uses less digits than its factorization.

1928381818213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148907.

The product of its digits is 1327104, while the sum is 55.

The spelling of 1928381818213 in words is "one trillion, nine hundred twenty-eight billion, three hundred eighty-one million, eight hundred eighteen thousand, two hundred thirteen".