1689045603 has 64 divisors (see below), whose sum is σ = 2777948160. Its totient is φ = 891502848.

The previous prime is 1689045599. The next prime is 1689045607. The reversal of 1689045603 is 3065409861.

It is a Cunningham number, because it is equal to 41098²-1.

It is an interprime number because it is at equal distance from previous prime (1689045599) and next prime (1689045607).

It is not a de Polignac number, because 1689045603 - 2² = 1689045599 is a prime.

1689045603 is a modest number, since divided by 45603 gives 1689 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1689045607) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2999800 + ... + 3000362.

It is an arithmetic number, because the mean of its divisors is an integer number (43405440).

Almost surely, 2^1689045603 is an apocalyptic number.

1689045603 is a deficient number, since it is larger than the sum of its proper divisors (1088902557).

1689045603 is a wasteful number, since it uses less digits than its factorization.

1689045603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1689045603 is about 41097.9999878340. Note that the first 4 decimals coincide. The cubic root of 1689045603 is about 1190.9141583313.

The spelling of 1689045603 in words is "one billion, six hundred eighty-nine million, forty-five thousand, six hundred three".