2658291421 has 2 divisors, whose sum is σ = 2658291422. Its totient is φ = 2658291420.

The previous prime is 2658291403. The next prime is 2658291473. The reversal of 2658291421 is 1241928562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2547220900 + 111070521 = 50470^2 + 10539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658291421 - 2⁹ = 2658290909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2658291221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329145710 + 1329145711.

It is an arithmetic number, because the mean of its divisors is an integer number (1329145711).

Almost surely, 2^2658291421 is an apocalyptic number.

It is an amenable number.

2658291421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658291421 is an equidigital number, since it uses as much as digits as its factorization.

2658291421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 2658291421 is about 51558.6212092604. The cubic root of 2658291421 is about 1385.2692584277.

The spelling of 2658291421 in words is "two billion, six hundred fifty-eight million, two hundred ninety-one thousand, four hundred twenty-one".