13858703820 has 144 divisors (see below), whose sum is σ = 47240286912. Its totient is φ = 3263040000.

The previous prime is 13858703819. The next prime is 13858703821. The reversal of 13858703820 is 2830785831.

13858703820 is a `hidden beast` number, since 1 + 38 + 587 + 0 + 38 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (13858703819) and next prime (13858703821).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (13858703821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74931 + ... + 182570.

It is an arithmetic number, because the mean of its divisors is an integer number (328057548).

Almost surely, 2^13858703820 is an apocalyptic number.

13858703820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13858703820 is an abundant number, since it is smaller than the sum of its proper divisors (33381583092).

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

13858703820 is a wasteful number, since it uses less digits than its factorization.

13858703820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257552 (or 257547 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 13858703820 in words is "thirteen billion, eight hundred fifty-eight million, seven hundred three thousand, eight hundred twenty".