4581421843 has 2 divisors, whose sum is σ = 4581421844. Its totient is φ = 4581421842.

The previous prime is 4581421787. The next prime is 4581421847. The reversal of 4581421843 is 3481241854.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4581421843 - 2²⁵ = 4547867411 is a prime.

It is a super-2 number, since 2×4581421843² = 41978852207035033298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4581421796 and 4581421805.

It is not a weakly prime, because it can be changed into another prime (4581421847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2290710921 + 2290710922.

It is an arithmetic number, because the mean of its divisors is an integer number (2290710922).

Almost surely, 2^4581421843 is an apocalyptic number.

4581421843 is a deficient number, since it is larger than the sum of its proper divisors (1).

4581421843 is an equidigital number, since it uses as much as digits as its factorization.

4581421843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 40.

The square root of 4581421843 is about 67686.2012747059. The cubic root of 4581421843 is about 1660.8615360217.

The spelling of 4581421843 in words is "four billion, five hundred eighty-one million, four hundred twenty-one thousand, eight hundred forty-three".