4180681388 has 24 divisors (see below), whose sum is σ = 8221543008. Its totient is φ = 1845651456.

The previous prime is 4180681367. The next prime is 4180681391. The reversal of 4180681388 is 8831860814.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746581 + ... + 1748972.

It is an arithmetic number, because the mean of its divisors is an integer number (342564292).

Almost surely, 2^4180681388 is an apocalyptic number.

It is an amenable number.

4180681388 is a deficient number, since it is larger than the sum of its proper divisors (4040861620).

4180681388 is a wasteful number, since it uses less digits than its factorization.

4180681388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495593 (or 3495591 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 4180681388 is about 64658.1888703975. The cubic root of 4180681388 is about 1610.9510973071.

The spelling of 4180681388 in words is "four billion, one hundred eighty million, six hundred eighty-one thousand, three hundred eighty-eight".