2118864603919 has 4 divisors (see below), whose sum is σ = 2421559547344. Its totient is φ = 1816169660496.

The previous prime is 2118864603917. The next prime is 2118864603937. The reversal of 2118864603919 is 9193064688112.

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

It is a cyclic number.

It is not a de Polignac number, because 2118864603919 - 2¹ = 2118864603917 is a prime.

It is a super-2 number, since 2×2118864603919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118864603917) 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, 151347471702 + ... + 151347471715.

It is an arithmetic number, because the mean of its divisors is an integer number (605389886836).

Almost surely, 2^{2118864603919} is an apocalyptic number.

2118864603919 is a deficient number, since it is larger than the sum of its proper divisors (302694943425).

2118864603919 is an equidigital number, since it uses as much as digits as its factorization.

2118864603919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302694943424.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 2118864603919 in words is "two trillion, one hundred eighteen billion, eight hundred sixty-four million, six hundred three thousand, nine hundred nineteen".