1688043001 has 8 divisors (see below), whose sum is σ = 1709944704. Its totient is φ = 1666247520.

The previous prime is 1688042989. The next prime is 1688043013. The reversal of 1688043001 is 1003408861.

It is an interprime number because it is at equal distance from previous prime (1688042989) and next prime (1688043013).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1688043001 - 2¹³ = 1688034809 is a prime.

It is a super-3 number, since 3×1688043001³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688043901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5685 + ... + 58381.

It is an arithmetic number, because the mean of its divisors is an integer number (213743088).

Almost surely, 2^1688043001 is an apocalyptic number.

It is an amenable number.

1688043001 is a deficient number, since it is larger than the sum of its proper divisors (21901703).

1688043001 is a wasteful number, since it uses less digits than its factorization.

1688043001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53111.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1688043001 is about 41085.8004789976. The cubic root of 1688043001 is about 1190.6784731127.

The spelling of 1688043001 in words is "one billion, six hundred eighty-eight million, forty-three thousand, one".