4181630638 has 16 divisors (see below), whose sum is σ = 6295012416. Its totient is φ = 2083304160.

The previous prime is 4181630569. The next prime is 4181630647. The reversal of 4181630638 is 8360361814.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4181630638.

It is a congruent number.

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, 1179148 + ... + 1182688.

It is an arithmetic number, because the mean of its divisors is an integer number (393438276).

Almost surely, 2^4181630638 is an apocalyptic number.

4181630638 is a deficient number, since it is larger than the sum of its proper divisors (2113381778).

4181630638 is a wasteful number, since it uses less digits than its factorization.

4181630638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5499.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 4181630638 is about 64665.5289779648. The cubic root of 4181630638 is about 1611.0730136060.

The spelling of 4181630638 in words is "four billion, one hundred eighty-one million, six hundred thirty thousand, six hundred thirty-eight".