1689028950 has 48 divisors (see below), whose sum is σ = 4787193600. Its totient is φ = 386063520.

The previous prime is 1689028903. The next prime is 1689028973. The reversal of 1689028950 is 598209861.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1689028950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 803250 + ... + 805349.

It is an arithmetic number, because the mean of its divisors is an integer number (99733200).

Almost surely, 2^1689028950 is an apocalyptic number.

1689028950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1689028950 is an abundant number, since it is smaller than the sum of its proper divisors (3098164650).

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

1689028950 is a wasteful number, since it uses less digits than its factorization.

1689028950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608621 (or 1608616 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 1689028950 is about 41097.7973862347. The cubic root of 1689028950 is about 1190.9102444132.

The spelling of 1689028950 in words is "one billion, six hundred eighty-nine million, twenty-eight thousand, nine hundred fifty".