3130748638 has 16 divisors (see below), whose sum is σ = 4918404096. Its totient is φ = 1491783480.

The previous prime is 3130748603. The next prime is 3130748641. The reversal of 3130748638 is 8368470313.

It is a junction number, because it is equal to n+sod(n) for n = 3130748594 and 3130748603.

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, 113106 + ... + 138037.

It is an arithmetic number, because the mean of its divisors is an integer number (307400256).

Almost surely, 2^3130748638 is an apocalyptic number.

3130748638 is a deficient number, since it is larger than the sum of its proper divisors (1787655458).

3130748638 is a wasteful number, since it uses less digits than its factorization.

3130748638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251439.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 3130748638 is about 55953.0931942105. The cubic root of 3130748638 is about 1462.9048063252.

The spelling of 3130748638 in words is "three billion, one hundred thirty million, seven hundred forty-eight thousand, six hundred thirty-eight".