1689430344 has 32 divisors (see below), whose sum is σ = 4826944320. Its totient is φ = 482694336.

The previous prime is 1689430331. The next prime is 1689430357. The reversal of 1689430344 is 4430349861.

It is an interprime number because it is at equal distance from previous prime (1689430331) and next prime (1689430357).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1689430296 and 1689430305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5027899 + ... + 5028234.

It is an arithmetic number, because the mean of its divisors is an integer number (150842010).

Almost surely, 2^1689430344 is an apocalyptic number.

1689430344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1689430344 is an abundant number, since it is smaller than the sum of its proper divisors (3137513976).

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

1689430344 is a wasteful number, since it uses less digits than its factorization.

1689430344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056149 (or 10056145 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 1689430344 is about 41102.6804965321. The cubic root of 1689430344 is about 1191.0045760042.

The spelling of 1689430344 in words is "one billion, six hundred eighty-nine million, four hundred thirty thousand, three hundred forty-four".