4161421639 has 2 divisors, whose sum is σ = 4161421640. Its totient is φ = 4161421638.

The previous prime is 4161421609. The next prime is 4161421643. The reversal of 4161421639 is 9361241614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4161421639 - 2²⁵ = 4127867207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4161421598 and 4161421607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4161421609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080710819 + 2080710820.

It is an arithmetic number, because the mean of its divisors is an integer number (2080710820).

Almost surely, 2^4161421639 is an apocalyptic number.

4161421639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4161421639 is an equidigital number, since it uses as much as digits as its factorization.

4161421639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 4161421639 is about 64509.0818334907. The cubic root of 4161421639 is about 1608.4734883567.

The spelling of 4161421639 in words is "four billion, one hundred sixty-one million, four hundred twenty-one thousand, six hundred thirty-nine".