1696889081 has 4 divisors (see below), whose sum is σ = 1732993152. Its totient is φ = 1660785012.

The previous prime is 1696889059. The next prime is 1696889113. The reversal of 1696889081 is 1809886961.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1696889081 is a prime.

It is a super-2 number, since 2×1696889081² = 5758865106434049122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1696889281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18051965 + ... + 18052058.

It is an arithmetic number, because the mean of its divisors is an integer number (433248288).

Almost surely, 2^1696889081 is an apocalyptic number.

It is an amenable number.

1696889081 is a deficient number, since it is larger than the sum of its proper divisors (36104071).

1696889081 is an equidigital number, since it uses as much as digits as its factorization.

1696889081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36104070.

The product of its (nonzero) digits is 1492992, while the sum is 56.

The square root of 1696889081 is about 41193.3135472251. The cubic root of 1696889081 is about 1192.7547416116.

The spelling of 1696889081 in words is "one billion, six hundred ninety-six million, eight hundred eighty-nine thousand, eighty-one".