2130243138 has 40 divisors (see below), whose sum is σ = 4809808080. Its totient is φ = 704653560.

The previous prime is 2130243107. The next prime is 2130243139. The reversal of 2130243138 is 8313420312.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2130243139) 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 19 ways as a sum of consecutive naturals, for example, 28968 + ... + 71411.

It is an arithmetic number, because the mean of its divisors is an integer number (120245202).

Almost surely, 2^2130243138 is an apocalyptic number.

2130243138 is an abundant number, since it is smaller than the sum of its proper divisors (2679564942).

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

2130243138 is a wasteful number, since it uses less digits than its factorization.

2130243138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100524 (or 100515 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2130243138 is about 46154.5570664479. The cubic root of 2130243138 is about 1286.6973060288.

The spelling of 2130243138 in words is "two billion, one hundred thirty million, two hundred forty-three thousand, one hundred thirty-eight".