1659351444 has 24 divisors (see below), whose sum is σ = 3882046560. Its totient is φ = 551656224.

The previous prime is 1659351439. The next prime is 1659351451. The reversal of 1659351444 is 4441539561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1659351396 and 1659351405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177879 + ... + 186974.

It is an arithmetic number, because the mean of its divisors is an integer number (161751940).

Almost surely, 2^1659351444 is an apocalyptic number.

It is an amenable number.

1659351444 is an abundant number, since it is smaller than the sum of its proper divisors (2222695116).

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

1659351444 is a wasteful number, since it uses less digits than its factorization.

1659351444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365239 (or 365237 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 1659351444 is about 40735.1377068987. The cubic root of 1659351444 is about 1183.8939263461.

The spelling of 1659351444 in words is "one billion, six hundred fifty-nine million, three hundred fifty-one thousand, four hundred forty-four".