3430021891 has 2 divisors, whose sum is σ = 3430021892. Its totient is φ = 3430021890.

The previous prime is 3430021871. The next prime is 3430021897. The reversal of 3430021891 is 1981200343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3430021891 - 2²¹ = 3427924739 is a prime.

It is not a weakly prime, because it can be changed into another prime (3430021897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1715010945 + 1715010946.

It is an arithmetic number, because the mean of its divisors is an integer number (1715010946).

Almost surely, 2^3430021891 is an apocalyptic number.

3430021891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3430021891 is an equidigital number, since it uses as much as digits as its factorization.

3430021891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3430021891 is about 58566.3887481549. The cubic root of 3430021891 is about 1508.1074913645.

The spelling of 3430021891 in words is "three billion, four hundred thirty million, twenty-one thousand, eight hundred ninety-one".