18685708470 has 192 divisors, whose sum is σ = 57171127104. Its totient is φ = 4174479360.

The previous prime is 18685708463. The next prime is 18685708477. The reversal of 18685708470 is 7480758681.

It is a happy number.

18685708470 is a `hidden beast` number, since 1 + 8 + 68 + 570 + 8 + 4 + 7 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (18685708463) and next prime (18685708477).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18685708477) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15353302 + ... + 15354518.

It is an arithmetic number, because the mean of its divisors is an integer number (297766287).

Almost surely, 2^18685708470 is an apocalyptic number.

18685708470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18685708470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28585563552).

18685708470 is an abundant number, since it is smaller than the sum of its proper divisors (38485418634).

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

18685708470 is a wasteful number, since it uses less digits than its factorization.

18685708470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 18685708470 in words is "eighteen billion, six hundred eighty-five million, seven hundred eight thousand, four hundred seventy".