213914194513 has 4 divisors (see below), whose sum is σ = 213989598900. Its totient is φ = 213838790128.

The previous prime is 213914194511. The next prime is 213914194517. The reversal of 213914194513 is 315491419312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117434379969 + 96479814544 = 342687^2 + 310612^2 .

It is a cyclic number.

It is not a de Polignac number, because 213914194513 - 2¹ = 213914194511 is a prime.

It is a super-2 number, since 2×213914194513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213914194513.

It is not an unprimeable number, because it can be changed into a prime (213914194511) 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, 37697938 + ... + 37703611.

It is an arithmetic number, because the mean of its divisors is an integer number (53497399725).

Almost surely, 2^213914194513 is an apocalyptic number.

It is an amenable number.

213914194513 is a deficient number, since it is larger than the sum of its proper divisors (75404387).

213914194513 is an equidigital number, since it uses as much as digits as its factorization.

213914194513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75404386.

The product of its digits is 116640, while the sum is 43.

The spelling of 213914194513 in words is "two hundred thirteen billion, nine hundred fourteen million, one hundred ninety-four thousand, five hundred thirteen".