1688214238 has 8 divisors (see below), whose sum is σ = 2545580160. Its totient is φ = 839687520.

The previous prime is 1688214217. The next prime is 1688214251. The reversal of 1688214238 is 8324128861.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1688214194 and 1688214203.

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, 2209323 + ... + 2210086.

It is an arithmetic number, because the mean of its divisors is an integer number (318197520).

Almost surely, 2^1688214238 is an apocalyptic number.

1688214238 is a deficient number, since it is larger than the sum of its proper divisors (857365922).

1688214238 is a wasteful number, since it uses less digits than its factorization.

1688214238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419602.

The product of its digits is 147456, while the sum is 43.

The square root of 1688214238 is about 41087.8843212935. The cubic root of 1688214238 is about 1190.7187330105.

The spelling of 1688214238 in words is "one billion, six hundred eighty-eight million, two hundred fourteen thousand, two hundred thirty-eight".