13898538377 has 4 divisors (see below), whose sum is σ = 14716099476. Its totient is φ = 13080977280.

The previous prime is 13898538359. The next prime is 13898538421. The reversal of 13898538377 is 77383589831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77383589831 = 1201 ⋅64432631.

It can be written as a sum of positive squares in 2 ways, for example, as 8850293776 + 5048244601 = 94076^2 + 71051^2 .

It is a cyclic number.

It is not a de Polignac number, because 13898538377 - 2¹⁴ = 13898521993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13898538317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408780524 + ... + 408780557.

It is an arithmetic number, because the mean of its divisors is an integer number (3679024869).

Almost surely, 2^13898538377 is an apocalyptic number.

13898538377 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13898538377 is a deficient number, since it is larger than the sum of its proper divisors (817561099).

13898538377 is an equidigital number, since it uses as much as digits as its factorization.

13898538377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817561098.

The product of its digits is 30481920, while the sum is 62.

The spelling of 13898538377 in words is "thirteen billion, eight hundred ninety-eight million, five hundred thirty-eight thousand, three hundred seventy-seven".