13845453437 has 4 divisors (see below), whose sum is σ = 13849160160. Its totient is φ = 13841746716.

The previous prime is 13845453409. The next prime is 13845453439. The reversal of 13845453437 is 73435454831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73435454831 = 2053 ⋅35769827.

It is a cyclic number.

It is not a de Polignac number, because 13845453437 - 2²⁴ = 13828676221 is a prime.

It is a super-2 number, since 2×13845453437² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13845453391 and 13845453400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13845453439) 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, 1847753 + ... + 1855230.

It is an arithmetic number, because the mean of its divisors is an integer number (3462290040).

Almost surely, 2^13845453437 is an apocalyptic number.

It is an amenable number.

13845453437 is a deficient number, since it is larger than the sum of its proper divisors (3706723).

13845453437 is an equidigital number, since it uses as much as digits as its factorization.

13845453437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706722.

The product of its digits is 2419200, while the sum is 47.

The spelling of 13845453437 in words is "thirteen billion, eight hundred forty-five million, four hundred fifty-three thousand, four hundred thirty-seven".