1064407891 has 2 divisors, whose sum is σ = 1064407892. Its totient is φ = 1064407890.

The previous prime is 1064407889. The next prime is 1064407913. The reversal of 1064407891 is 1987044601.

It is a weak prime.

It is an emirp because it is prime and its reverse (1987044601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1064407891 - 2¹ = 1064407889 is a prime.

It is a super-2 number, since 2×1064407891² = 2265928316846135762, which contains 22 as substring.

Together with 1064407889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1064407811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532203945 + 532203946.

It is an arithmetic number, because the mean of its divisors is an integer number (532203946).

Almost surely, 2^1064407891 is an apocalyptic number.

1064407891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064407891 is an equidigital number, since it uses as much as digits as its factorization.

1064407891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1064407891 is about 32625.2646119537. The cubic root of 1064407891 is about 1021.0241830501.

The spelling of 1064407891 in words is "one billion, sixty-four million, four hundred seven thousand, eight hundred ninety-one".