2129796738 has 24 divisors (see below), whose sum is σ = 4739278908. Its totient is φ = 690744672.

The previous prime is 2129796733. The next prime is 2129796763. The reversal of 2129796738 is 8376979212.

It can be written as a sum of positive squares in 2 ways, for example, as 2057257449 + 72539289 = 45357^2 + 8517^2 .

It is not an unprimeable number, because it can be changed into a prime (2129796733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1598281 + ... + 1599612.

Almost surely, 2^2129796738 is an apocalyptic number.

2129796738 is an abundant number, since it is smaller than the sum of its proper divisors (2609482170).

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

2129796738 is a wasteful number, since it uses less digits than its factorization.

2129796738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197938 (or 3197935 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 2129796738 is about 46149.7208875633. The cubic root of 2129796738 is about 1286.6074224230.

The spelling of 2129796738 in words is "two billion, one hundred twenty-nine million, seven hundred ninety-six thousand, seven hundred thirty-eight".