13620236939 has 4 divisors (see below), whose sum is σ = 13620884880. Its totient is φ = 13619589000.

The previous prime is 13620236909. The next prime is 13620236957. The reversal of 13620236939 is 93963202631.

13620236939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93963202631 = 61 ⋅1540380371.

It is a cyclic number.

It is not a de Polignac number, because 13620236939 - 2¹⁶ = 13620171403 is a prime.

It is a super-3 number, since 3×13620236939³ (a number of 31 digits) contains 333 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 13620236939.

It is not an unprimeable number, because it can be changed into a prime (13620236909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291344 + ... + 334845.

It is an arithmetic number, because the mean of its divisors is an integer number (3405221220).

Almost surely, 2^13620236939 is an apocalyptic number.

13620236939 is a deficient number, since it is larger than the sum of its proper divisors (647941).

13620236939 is an equidigital number, since it uses as much as digits as its factorization.

13620236939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647940.

The product of its (nonzero) digits is 314928, while the sum is 44.

The spelling of 13620236939 in words is "thirteen billion, six hundred twenty million, two hundred thirty-six thousand, nine hundred thirty-nine".