134263891 has 2 divisors, whose sum is σ = 134263892. Its totient is φ = 134263890.

The previous prime is 134263879. The next prime is 134263933. The reversal of 134263891 is 198362431.

It is a weak prime.

It is an emirp because it is prime and its reverse (198362431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134263891 - 2¹⁷ = 134132819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134263891.

It is not a weakly prime, because it can be changed into another prime (134261891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67131945 + 67131946.

It is an arithmetic number, because the mean of its divisors is an integer number (67131946).

Almost surely, 2^134263891 is an apocalyptic number.

134263891 is a deficient number, since it is larger than the sum of its proper divisors (1).

134263891 is an equidigital number, since it uses as much as digits as its factorization.

134263891 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 134263891 is about 11587.2296516467. The cubic root of 134263891 is about 512.0586925615.

The spelling of 134263891 in words is "one hundred thirty-four million, two hundred sixty-three thousand, eight hundred ninety-one".