18314043413 has 8 divisors (see below), whose sum is σ = 18452140632. Its totient is φ = 18176010496.

The previous prime is 18314043409. The next prime is 18314043421. The reversal of 18314043413 is 31434041381.

It can be written as a sum of positive squares in 4 ways, for example, as 5642713924 + 12671329489 = 75118^2 + 112567^2 .

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 18314043413 - 2² = 18314043409 is a prime.

It is a super-4 number, since 4×18314043413⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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 18314043413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18314043443) 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, 662831 + ... + 689907.

It is an arithmetic number, because the mean of its divisors is an integer number (2306517579).

Almost surely, 2^18314043413 is an apocalyptic number.

It is an amenable number.

18314043413 is a deficient number, since it is larger than the sum of its proper divisors (138097219).

18314043413 is a wasteful number, since it uses less digits than its factorization.

18314043413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32151.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 18314043413 its reverse (31434041381), we get a palindrome (49748084794).

The spelling of 18314043413 in words is "eighteen billion, three hundred fourteen million, forty-three thousand, four hundred thirteen".