1695437665 has 4 divisors (see below), whose sum is σ = 2034525204. Its totient is φ = 1356350128.

The previous prime is 1695437657. The next prime is 1695437671. The reversal of 1695437665 is 5667345961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 913731984 + 781705681 = 30228^2 + 27959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1695437665 - 2³ = 1695437657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169543762 + ... + 169543771.

It is an arithmetic number, because the mean of its divisors is an integer number (508631301).

Almost surely, 2^1695437665 is an apocalyptic number.

It is an amenable number.

1695437665 is a deficient number, since it is larger than the sum of its proper divisors (339087539).

1695437665 is an equidigital number, since it uses as much as digits as its factorization.

1695437665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339087538.

The product of its digits is 4082400, while the sum is 52.

The square root of 1695437665 is about 41175.6926474832. The cubic root of 1695437665 is about 1192.4145745861.

The spelling of 1695437665 in words is "one billion, six hundred ninety-five million, four hundred thirty-seven thousand, six hundred sixty-five".