1689426594 has 24 divisors (see below), whose sum is σ = 3664056240. Its totient is φ = 562583448.

The previous prime is 1689426587. The next prime is 1689426617. The reversal of 1689426594 is 4956249861.

1689426594 is a `hidden beast` number, since 1 + 6 + 8 + 9 + 42 + 6 + 594 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1689426594.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27712 + ... + 64395.

It is an arithmetic number, because the mean of its divisors is an integer number (152669010).

Almost surely, 2^1689426594 is an apocalyptic number.

1689426594 is an abundant number, since it is smaller than the sum of its proper divisors (1974629646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689426594 is a wasteful number, since it uses less digits than its factorization.

1689426594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93134 (or 93131 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1689426594 is about 41102.6348790439. The cubic root of 1689426594 is about 1191.0036947860.

The spelling of 1689426594 in words is "one billion, six hundred eighty-nine million, four hundred twenty-six thousand, five hundred ninety-four".