1687888113 has 16 divisors (see below), whose sum is σ = 2263049280. Its totient is φ = 1119009344.

The previous prime is 1687888109. The next prime is 1687888121. The reversal of 1687888113 is 3118887861.

It is a cyclic number.

It is not a de Polignac number, because 1687888113 - 2² = 1687888109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1687888193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525370 + ... + 528572.

It is an arithmetic number, because the mean of its divisors is an integer number (141440580).

Almost surely, 2^1687888113 is an apocalyptic number.

It is an amenable number.

1687888113 is a deficient number, since it is larger than the sum of its proper divisors (575161167).

1687888113 is a wasteful number, since it uses less digits than its factorization.

1687888113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128.

The product of its digits is 516096, while the sum is 51.

The square root of 1687888113 is about 41083.9155022985. The cubic root of 1687888113 is about 1190.6420547181.

The spelling of 1687888113 in words is "one billion, six hundred eighty-seven million, eight hundred eighty-eight thousand, one hundred thirteen".