3138129500 has 48 divisors (see below), whose sum is σ = 7476749280. Its totient is φ = 1141136000.

The previous prime is 3138129481. The next prime is 3138129503. The reversal of 3138129500 is 59218313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138129503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279785 + ... + 290784.

It is an arithmetic number, because the mean of its divisors is an integer number (155765610).

Almost surely, 2^3138129500 is an apocalyptic number.

It is an amenable number.

3138129500 is an abundant number, since it is smaller than the sum of its proper divisors (4338619780).

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

3138129500 is a wasteful number, since it uses less digits than its factorization.

3138129500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570599 (or 570587 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3138129500 is about 56019.0101661927. The cubic root of 3138129500 is about 1464.0535224592.

The spelling of 3138129500 in words is "three billion, one hundred thirty-eight million, one hundred twenty-nine thousand, five hundred".