4193530421 has 2 divisors, whose sum is σ = 4193530422. Its totient is φ = 4193530420.

The previous prime is 4193530417. The next prime is 4193530447. The reversal of 4193530421 is 1240353914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4146072100 + 47458321 = 64390^2 + 6889^2 .

It is a cyclic number.

It is not a de Polignac number, because 4193530421 - 2² = 4193530417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4193530321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096765210 + 2096765211.

It is an arithmetic number, because the mean of its divisors is an integer number (2096765211).

Almost surely, 2^4193530421 is an apocalyptic number.

It is an amenable number.

4193530421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4193530421 is an equidigital number, since it uses as much as digits as its factorization.

4193530421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 4193530421 is about 64757.4738620956. The cubic root of 4193530421 is about 1612.5997914004.

The spelling of 4193530421 in words is "four billion, one hundred ninety-three million, five hundred thirty thousand, four hundred twenty-one".