5681606238 has 48 divisors (see below), whose sum is σ = 15347719296. Its totient is φ = 1475741520.

The previous prime is 5681606237. The next prime is 5681606263. The reversal of 5681606238 is 8326061865.

5681606238 is a `hidden beast` number, since 5 + 6 + 8 + 1 + 606 + 2 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5681606193 and 5681606202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681606237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2048256 + ... + 2051027.

It is an arithmetic number, because the mean of its divisors is an integer number (319744152).

Almost surely, 2^5681606238 is an apocalyptic number.

5681606238 is an abundant number, since it is smaller than the sum of its proper divisors (9666113058).

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

5681606238 is a wasteful number, since it uses less digits than its factorization.

5681606238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099309 (or 4099306 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 5681606238 is about 75376.4302550870. The cubic root of 5681606238 is about 1784.3924510049.

The spelling of 5681606238 in words is "five billion, six hundred eighty-one million, six hundred six thousand, two hundred thirty-eight".