13851734845 has 8 divisors (see below), whose sum is σ = 17900703576. Its totient is φ = 10228973376.

The previous prime is 13851734791. The next prime is 13851734887. The reversal of 13851734845 is 54843715831.

It can be written as a sum of positive squares in 4 ways, for example, as 1515856356 + 12335878489 = 38934^2 + 111067^2 .

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 13851734845 - 2¹³ = 13851726653 is a prime.

It is a super-4 number, since 4×13851734845⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106551742 + ... + 106551871.

It is an arithmetic number, because the mean of its divisors is an integer number (2237587947).

Almost surely, 2^13851734845 is an apocalyptic number.

It is an amenable number.

13851734845 is a deficient number, since it is larger than the sum of its proper divisors (4048968731).

13851734845 is a wasteful number, since it uses less digits than its factorization.

13851734845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213103631.

The product of its digits is 1612800, while the sum is 49.

The spelling of 13851734845 in words is "thirteen billion, eight hundred fifty-one million, seven hundred thirty-four thousand, eight hundred forty-five".