2129538790 has 32 divisors (see below), whose sum is σ = 3852969120. Its totient is φ = 847430400.

The previous prime is 2129538739. The next prime is 2129538793. The reversal of 2129538790 is 978359212.

It is a super-2 number, since 2×2129538790² = 9069870916229328200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2129538790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129538793) 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, 2631906 + ... + 2632714.

It is an arithmetic number, because the mean of its divisors is an integer number (120405285).

Almost surely, 2^2129538790 is an apocalyptic number.

2129538790 is a deficient number, since it is larger than the sum of its proper divisors (1723430330).

2129538790 is a wasteful number, since it uses less digits than its factorization.

2129538790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 2129538790 is about 46146.9261164815. The cubic root of 2129538790 is about 1286.5554783095. Note that the first 3 decimals are identical.

The spelling of 2129538790 in words is "two billion, one hundred twenty-nine million, five hundred thirty-eight thousand, seven hundred ninety".