1064448691 has 2 divisors, whose sum is σ = 1064448692. Its totient is φ = 1064448690.

The previous prime is 1064448653. The next prime is 1064448701. The reversal of 1064448691 is 1968444601.

It is a strong prime.

It is an emirp because it is prime and its reverse (1968444601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1064448691 - 2⁹ = 1064448179 is a prime.

It is a super-2 number, since 2×1064448691² = 2266102031543226962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1064448611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532224345 + 532224346.

It is an arithmetic number, because the mean of its divisors is an integer number (532224346).

Almost surely, 2^1064448691 is an apocalyptic number.

1064448691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064448691 is an equidigital number, since it uses as much as digits as its factorization.

1064448691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1064448691 is about 32625.8898882467. The cubic root of 1064448691 is about 1021.0372285673.

The spelling of 1064448691 in words is "one billion, sixty-four million, four hundred forty-eight thousand, six hundred ninety-one".