136818630 has 96 divisors (see below), whose sum is σ = 385336224. Its totient is φ = 33481728.

The previous prime is 136818629. The next prime is 136818631. The reversal of 136818630 is 36818631.

136818630 is a `hidden beast` number, since 1 + 3 + 6 + 8 + 18 + 630 = 666.

It is an interprime number because it is at equal distance from previous prime (136818629) and next prime (136818631).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136818631) 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, 394117 + ... + 394463.

It is an arithmetic number, because the mean of its divisors is an integer number (4013919).

Almost surely, 2^136818630 is an apocalyptic number.

136818630 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 136818630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192668112).

136818630 is an abundant number, since it is smaller than the sum of its proper divisors (248517594).

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

136818630 is a wasteful number, since it uses less digits than its factorization.

136818630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 136818630 is about 11696.9496023536. The cubic root of 136818630 is about 515.2860822937.

Subtracting from 136818630 its reverse (36818631), we obtain a palindrome (99999999).

The spelling of 136818630 in words is "one hundred thirty-six million, eight hundred eighteen thousand, six hundred thirty".