2142916409 has 4 divisors (see below), whose sum is σ = 2174900304. Its totient is φ = 2110932516.

The previous prime is 2142916367. The next prime is 2142916427. The reversal of 2142916409 is 9046192412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142916409 - 2¹⁶ = 2142850873 is a prime.

It is a super-2 number, since 2×2142916409² = 9184181471922910562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142916429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15991847 + ... + 15991980.

It is an arithmetic number, because the mean of its divisors is an integer number (543725076).

Almost surely, 2^2142916409 is an apocalyptic number.

It is an amenable number.

2142916409 is a deficient number, since it is larger than the sum of its proper divisors (31983895).

2142916409 is an equidigital number, since it uses as much as digits as its factorization.

2142916409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31983894.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2142916409 is about 46291.6451317082. The cubic root of 2142916409 is about 1289.2438749386.

The spelling of 2142916409 in words is "two billion, one hundred forty-two million, nine hundred sixteen thousand, four hundred nine".