2146275949 has 4 divisors (see below), whose sum is σ = 2154254940. Its totient is φ = 2138296960.

The previous prime is 2146275947. The next prime is 2146275953. The reversal of 2146275949 is 9495726412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 581677924 + 1564598025 = 24118^2 + 39555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146275949 - 2¹ = 2146275947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146275947) 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, 3989092 + ... + 3989629.

It is an arithmetic number, because the mean of its divisors is an integer number (538563735).

Almost surely, 2^2146275949 is an apocalyptic number.

It is an amenable number.

2146275949 is a deficient number, since it is larger than the sum of its proper divisors (7978991).

2146275949 is an equidigital number, since it uses as much as digits as its factorization.

2146275949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978990.

The product of its digits is 1088640, while the sum is 49.

The square root of 2146275949 is about 46327.9175983553. The cubic root of 2146275949 is about 1289.9172570769.

The spelling of 2146275949 in words is "two billion, one hundred forty-six million, two hundred seventy-five thousand, nine hundred forty-nine".