1065894691 has 2 divisors, whose sum is σ = 1065894692. Its totient is φ = 1065894690.

The previous prime is 1065894659. The next prime is 1065894719. The reversal of 1065894691 is 1964985601.

It is a strong prime.

It is an emirp because it is prime and its reverse (1964985601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1065894691 - 2⁵ = 1065894659 is a prime.

It is a super-2 number, since 2×1065894691² = 2272262984603970962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065892691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532947345 + 532947346.

It is an arithmetic number, because the mean of its divisors is an integer number (532947346).

Almost surely, 2^1065894691 is an apocalyptic number.

1065894691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065894691 is an equidigital number, since it uses as much as digits as its factorization.

1065894691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1065894691 is about 32648.0426825254. The cubic root of 1065894691 is about 1021.4993619395.

The spelling of 1065894691 in words is "one billion, sixty-five million, eight hundred ninety-four thousand, six hundred ninety-one".