1689027994 has 8 divisors (see below), whose sum is σ = 2615269248. Its totient is φ = 817271580.

The previous prime is 1689027973. The next prime is 1689027997. The reversal of 1689027994 is 4997209861.

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

It is not an unprimeable number, because it can be changed into a prime (1689027997) 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, 13621132 + ... + 13621255.

It is an arithmetic number, because the mean of its divisors is an integer number (326908656).

Almost surely, 2^1689027994 is an apocalyptic number.

1689027994 is a deficient number, since it is larger than the sum of its proper divisors (926241254).

1689027994 is a wasteful number, since it uses less digits than its factorization.

1689027994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27242420.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 1689027994 is about 41097.7857554394. The cubic root of 1689027994 is about 1190.9100197258.

The spelling of 1689027994 in words is "one billion, six hundred eighty-nine million, twenty-seven thousand, nine hundred ninety-four".