891262159 has 2 divisors, whose sum is σ = 891262160. Its totient is φ = 891262158.

The previous prime is 891262157. The next prime is 891262261. The reversal of 891262159 is 951262198.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 891262159 - 2¹ = 891262157 is a prime.

Together with 891262157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891262157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445631079 + 445631080.

It is an arithmetic number, because the mean of its divisors is an integer number (445631080).

Almost surely, 2^891262159 is an apocalyptic number.

891262159 is a deficient number, since it is larger than the sum of its proper divisors (1).

891262159 is an equidigital number, since it uses as much as digits as its factorization.

891262159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The square root of 891262159 is about 29854.0141187077. The cubic root of 891262159 is about 962.3546650520.

The spelling of 891262159 in words is "eight hundred ninety-one million, two hundred sixty-two thousand, one hundred fifty-nine".