3438268891 has 2 divisors, whose sum is σ = 3438268892. Its totient is φ = 3438268890.

The previous prime is 3438268811. The next prime is 3438268901. The reversal of 3438268891 is 1988628343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3438268891 - 2²⁵ = 3404714459 is a prime.

It is not a weakly prime, because it can be changed into another prime (3438268811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719134445 + 1719134446.

It is an arithmetic number, because the mean of its divisors is an integer number (1719134446).

Almost surely, 2^3438268891 is an apocalyptic number.

3438268891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3438268891 is an equidigital number, since it uses as much as digits as its factorization.

3438268891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 52.

The square root of 3438268891 is about 58636.7537556437. The cubic root of 3438268891 is about 1509.3152006457.

The spelling of 3438268891 in words is "three billion, four hundred thirty-eight million, two hundred sixty-eight thousand, eight hundred ninety-one".