1689631104 has 64 divisors (see below), whose sum is σ = 5129245440. Its totient is φ = 482750976.

The previous prime is 1689631103. The next prime is 1689631109. The reversal of 1689631104 is 4011369861.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689631103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311604 + ... + 316979.

It is an arithmetic number, because the mean of its divisors is an integer number (80144460).

Almost surely, 2^1689631104 is an apocalyptic number.

1689631104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1689631104 is an abundant number, since it is smaller than the sum of its proper divisors (3439614336).

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

1689631104 is an equidigital number, since it uses as much as digits as its factorization.

1689631104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628607 (or 628595 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1689631104 is about 41105.1226004740. The cubic root of 1689631104 is about 1191.0517510000.

The spelling of 1689631104 in words is "one billion, six hundred eighty-nine million, six hundred thirty-one thousand, one hundred four".