1696957081 has 4 divisors (see below), whose sum is σ = 1751697664. Its totient is φ = 1642216500.

The previous prime is 1696957057. The next prime is 1696957099. The reversal of 1696957081 is 1807596961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1807596961 = 17 ⋅106329233.

It is a cyclic number.

It is not a de Polignac number, because 1696957081 - 2⁵ = 1696957049 is a prime.

It is a super-2 number, since 2×1696957081² = 5759326669512081122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1696957001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27370245 + ... + 27370306.

It is an arithmetic number, because the mean of its divisors is an integer number (437924416).

Almost surely, 2^1696957081 is an apocalyptic number.

It is an amenable number.

1696957081 is a deficient number, since it is larger than the sum of its proper divisors (54740583).

1696957081 is an equidigital number, since it uses as much as digits as its factorization.

1696957081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54740582.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1696957081 is about 41194.1389156273. The cubic root of 1696957081 is about 1192.7706739511.

The spelling of 1696957081 in words is "one billion, six hundred ninety-six million, nine hundred fifty-seven thousand, eighty-one".