1688030542 has 8 divisors (see below), whose sum is σ = 2762231832. Its totient is φ = 767286600.

The previous prime is 1688030527. The next prime is 1688030581. The reversal of 1688030542 is 2450308861.

It is a happy number.

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

It is a super-2 number, since 2×1688030542² = 5698894221449627528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38364309 + ... + 38364352.

It is an arithmetic number, because the mean of its divisors is an integer number (345278979).

Almost surely, 2^1688030542 is an apocalyptic number.

1688030542 is a deficient number, since it is larger than the sum of its proper divisors (1074201290).

1688030542 is a wasteful number, since it uses less digits than its factorization.

1688030542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76728674.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1688030542 is about 41085.6488569914. The cubic root of 1688030542 is about 1190.6755437443.

The spelling of 1688030542 in words is "one billion, six hundred eighty-eight million, thirty thousand, five hundred forty-two".