2115490129 has 4 divisors (see below), whose sum is σ = 2115584676. Its totient is φ = 2115395584.

The previous prime is 2115490123. The next prime is 2115490151. The reversal of 2115490129 is 9210945112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 828115729 + 1287374400 = 28777^2 + 35880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115490129 - 2¹⁹ = 2114965841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2115490094 and 2115490103.

It is not an unprimeable number, because it can be changed into a prime (2115490123) 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 3 ways as a sum of consecutive naturals, for example, 7257 + ... + 65449.

It is an arithmetic number, because the mean of its divisors is an integer number (528896169).

Almost surely, 2^2115490129 is an apocalyptic number.

It is an amenable number.

2115490129 is a deficient number, since it is larger than the sum of its proper divisors (94547).

2115490129 is an equidigital number, since it uses as much as digits as its factorization.

2115490129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94546.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2115490129 is about 45994.4575900184. The cubic root of 2115490129 is about 1283.7200797088.

The spelling of 2115490129 in words is "two billion, one hundred fifteen million, four hundred ninety thousand, one hundred twenty-nine".