2146890653 has 4 divisors (see below), whose sum is σ = 2176300188. Its totient is φ = 2117481120.

The previous prime is 2146890631. The next prime is 2146890661. The reversal of 2146890653 is 3560986412.

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 873970969 + 1272919684 = 29563^2 + 35678^2 .

It is a cyclic number.

It is not a de Polignac number, because 2146890653 - 2²⁶ = 2079781789 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 (2146890623) 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, 14704658 + ... + 14704803.

It is an arithmetic number, because the mean of its divisors is an integer number (544075047).

Almost surely, 2^2146890653 is an apocalyptic number.

It is an amenable number.

2146890653 is a deficient number, since it is larger than the sum of its proper divisors (29409535).

2146890653 is an equidigital number, since it uses as much as digits as its factorization.

2146890653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29409534.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2146890653 is about 46334.5513952601. The cubic root of 2146890653 is about 1290.0403915402.

The spelling of 2146890653 in words is "two billion, one hundred forty-six million, eight hundred ninety thousand, six hundred fifty-three".