3938630831 has 8 divisors (see below), whose sum is σ = 4037451840. Its totient is φ = 3841022592.

The previous prime is 3938630827. The next prime is 3938630849. The reversal of 3938630831 is 1380368393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3938630831 - 2² = 3938630827 is a prime.

It is a super-2 number, since 2×3938630831² = 31025625645807501122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938630231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296615 + ... + 309608.

It is an arithmetic number, because the mean of its divisors is an integer number (504681480).

Almost surely, 2^3938630831 is an apocalyptic number.

3938630831 is a deficient number, since it is larger than the sum of its proper divisors (98821009).

3938630831 is an equidigital number, since it uses as much as digits as its factorization.

3938630831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606385.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 3938630831 is about 62758.5120202830. The cubic root of 3938630831 is about 1579.2410539445.

The spelling of 3938630831 in words is "three billion, nine hundred thirty-eight million, six hundred thirty thousand, eight hundred thirty-one".