534143891 has 2 divisors, whose sum is σ = 534143892. Its totient is φ = 534143890.

The previous prime is 534143887. The next prime is 534143921. The reversal of 534143891 is 198341435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 534143891 - 2² = 534143887 is a prime.

It is not a weakly prime, because it can be changed into another prime (534143591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267071945 + 267071946.

It is an arithmetic number, because the mean of its divisors is an integer number (267071946).

Almost surely, 2^534143891 is an apocalyptic number.

534143891 is a deficient number, since it is larger than the sum of its proper divisors (1).

534143891 is an equidigital number, since it uses as much as digits as its factorization.

534143891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 534143891 is about 23111.5531931543. The cubic root of 534143891 is about 811.3708894136.

The spelling of 534143891 in words is "five hundred thirty-four million, one hundred forty-three thousand, eight hundred ninety-one".