213873816019 has 8 divisors (see below), whose sum is σ = 226730471328. Its totient is φ = 201047809920.

The previous prime is 213873816001. The next prime is 213873816029. The reversal of 213873816019 is 910618378312.

It is a happy number.

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

It is not a de Polignac number, because 213873816019 - 2⁷ = 213873815891 is a prime.

It is a super-2 number, since 2×213873816019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213873816029) 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, 7647927 + ... + 7675840.

It is an arithmetic number, because the mean of its divisors is an integer number (28341308916).

Almost surely, 2^213873816019 is an apocalyptic number.

213873816019 is a deficient number, since it is larger than the sum of its proper divisors (12856655309).

213873816019 is a wasteful number, since it uses less digits than its factorization.

213873816019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15324605.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 213873816019 in words is "two hundred thirteen billion, eight hundred seventy-three million, eight hundred sixteen thousand, nineteen".