1659359616 has 64 divisors (see below), whose sum is σ = 4490892720. Its totient is φ = 542676992.

The previous prime is 1659359593. The next prime is 1659359617. The reversal of 1659359616 is 6169539561.

It is a happy number.

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 (1659359617) 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, 20415 + ... + 61118.

Almost surely, 2^1659359616 is an apocalyptic number.

1659359616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1659359616 is an abundant number, since it is smaller than the sum of its proper divisors (2831533104).

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

1659359616 is an equidigital number, since it uses as much as digits as its factorization.

1659359616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81603 (or 81591 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 51.

The square root of 1659359616 is about 40735.2380132975. The cubic root of 1659359616 is about 1183.8958698293.

The spelling of 1659359616 in words is "one billion, six hundred fifty-nine million, three hundred fifty-nine thousand, six hundred sixteen".