1659244044 has 12 divisors (see below), whose sum is σ = 3871569464. Its totient is φ = 553081344.

The previous prime is 1659244043. The next prime is 1659244051. The reversal of 1659244044 is 4404429561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1659243993 and 1659244011.

It is not an unprimeable number, because it can be changed into a prime (1659244043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 69135157 + ... + 69135180.

Almost surely, 2^1659244044 is an apocalyptic number.

It is an amenable number.

1659244044 is an abundant number, since it is smaller than the sum of its proper divisors (2212325420).

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

1659244044 is a wasteful number, since it uses less digits than its factorization.

1659244044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138270344 (or 138270342 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1659244044 is about 40733.8194133573. The cubic root of 1659244044 is about 1183.8683836456.

The spelling of 1659244044 in words is "one billion, six hundred fifty-nine million, two hundred forty-four thousand, forty-four".