4654632421 has 2 divisors, whose sum is σ = 4654632422. Its totient is φ = 4654632420.

The previous prime is 4654632391. The next prime is 4654632427. The reversal of 4654632421 is 1242364564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4368549025 + 286083396 = 66095^2 + 16914^2 .

It is a cyclic number.

It is not a de Polignac number, because 4654632421 - 2¹³ = 4654624229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4654632427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2327316210 + 2327316211.

It is an arithmetic number, because the mean of its divisors is an integer number (2327316211).

Almost surely, 2^4654632421 is an apocalyptic number.

It is an amenable number.

4654632421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4654632421 is an equidigital number, since it uses as much as digits as its factorization.

4654632421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 37.

The square root of 4654632421 is about 68224.8665883635. The cubic root of 4654632421 is about 1669.6616165725.

Adding to 4654632421 its reverse (1242364564), we get a palindrome (5896996985).

The spelling of 4654632421 in words is "four billion, six hundred fifty-four million, six hundred thirty-two thousand, four hundred twenty-one".