13838335820 has 24 divisors (see below), whose sum is σ = 29212662528. Its totient is φ = 5506352000.

The previous prime is 13838335811. The next prime is 13838335829. The reversal of 13838335820 is 2853383831.

It is an interprime number because it is at equal distance from previous prime (13838335811) and next prime (13838335829).

It is not an unprimeable number, because it can be changed into a prime (13838335829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1807481 + ... + 1815120.

It is an arithmetic number, because the mean of its divisors is an integer number (1217194272).

Almost surely, 2^13838335820 is an apocalyptic number.

13838335820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13838335820 is an abundant number, since it is smaller than the sum of its proper divisors (15374326708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13838335820 is a wasteful number, since it uses less digits than its factorization.

13838335820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622801 (or 3622799 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 13838335820 in words is "thirteen billion, eight hundred thirty-eight million, three hundred thirty-five thousand, eight hundred twenty".