1695517985 has 32 divisors (see below), whose sum is σ = 2364774912. Its totient is φ = 1142991360.

The previous prime is 1695517981. The next prime is 1695518017. The reversal of 1695517985 is 5897155961.

It is not a de Polignac number, because 1695517985 - 2² = 1695517981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1695517985.

It is not an unprimeable number, because it can be changed into a prime (1695517981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1134899 + ... + 1136391.

It is an arithmetic number, because the mean of its divisors is an integer number (73899216).

Almost surely, 2^1695517985 is an apocalyptic number.

It is an amenable number.

1695517985 is a deficient number, since it is larger than the sum of its proper divisors (669256927).

1695517985 is a wasteful number, since it uses less digits than its factorization.

1695517985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033.

The product of its digits is 3402000, while the sum is 56.

The square root of 1695517985 is about 41176.6679686446. The cubic root of 1695517985 is about 1192.4334041836.

The spelling of 1695517985 in words is "one billion, six hundred ninety-five million, five hundred seventeen thousand, nine hundred eighty-five".