1964495717 has 2 divisors, whose sum is σ = 1964495718. Its totient is φ = 1964495716.

The previous prime is 1964495681. The next prime is 1964495759. The reversal of 1964495717 is 7175944691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1907855041 + 56640676 = 43679^2 + 7526^2 .

It is an emirp because it is prime and its reverse (7175944691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1964495717 - 2⁶ = 1964495653 is a prime.

It is a super-2 number, since 2×1964495717² = 7718486844222688178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964495777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982247858 + 982247859.

It is an arithmetic number, because the mean of its divisors is an integer number (982247859).

Almost surely, 2^1964495717 is an apocalyptic number.

It is an amenable number.

1964495717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964495717 is an equidigital number, since it uses as much as digits as its factorization.

1964495717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 1964495717 is about 44322.6321082131. The cubic root of 1964495717 is about 1252.4210607046.

The spelling of 1964495717 in words is "one billion, nine hundred sixty-four million, four hundred ninety-five thousand, seven hundred seventeen".