13953738369 has 4 divisors (see below), whose sum is σ = 18604984496. Its totient is φ = 9302492244.

The previous prime is 13953738347. The next prime is 13953738389. The reversal of 13953738369 is 96383735931.

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.

It is not a de Polignac number, because 13953738369 - 2¹³ = 13953730177 is a prime.

It is a super-2 number, since 2×13953738369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13953738389) 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, 2325623059 + ... + 2325623064.

It is an arithmetic number, because the mean of its divisors is an integer number (4651246124).

Almost surely, 2^13953738369 is an apocalyptic number.

It is an amenable number.

13953738369 is a deficient number, since it is larger than the sum of its proper divisors (4651246127).

13953738369 is an equidigital number, since it uses as much as digits as its factorization.

13953738369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651246126.

The product of its digits is 11022480, while the sum is 57.

It can be divided in two parts, 139537 and 38369, that added together give a triangular number (177906 = T₅₉₆).

The spelling of 13953738369 in words is "thirteen billion, nine hundred fifty-three million, seven hundred thirty-eight thousand, three hundred sixty-nine".