13828309381 has 4 divisors (see below), whose sum is σ = 13829906272. Its totient is φ = 13826712492.

The previous prime is 13828309301. The next prime is 13828309409. The reversal of 13828309381 is 18390382831.

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 a cyclic number.

It is not a de Polignac number, because 13828309381 - 2⁹ = 13828308869 is a prime.

It is a super-2 number, since 2×13828309381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13828309301) 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, 785385 + ... + 802798.

It is an arithmetic number, because the mean of its divisors is an integer number (3457476568).

Almost surely, 2^13828309381 is an apocalyptic number.

It is an amenable number.

13828309381 is a deficient number, since it is larger than the sum of its proper divisors (1596891).

13828309381 is an equidigital number, since it uses as much as digits as its factorization.

13828309381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596890.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 13828309381 in words is "thirteen billion, eight hundred twenty-eight million, three hundred nine thousand, three hundred eighty-one".