1659111664 has 20 divisors (see below), whose sum is σ = 3673747504. Its totient is φ = 711047808.

The previous prime is 1659111659. The next prime is 1659111691. The reversal of 1659111664 is 4661119561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7406637 + ... + 7406860.

Almost surely, 2^1659111664 is an apocalyptic number.

1659111664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1659111664 is an abundant number, since it is smaller than the sum of its proper divisors (2014635840).

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

1659111664 is a wasteful number, since it uses less digits than its factorization.

1659111664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14813512 (or 14813506 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 1659111664 is about 40732.1944412525. The cubic root of 1659111664 is about 1183.8368984912.

The spelling of 1659111664 in words is "one billion, six hundred fifty-nine million, one hundred eleven thousand, six hundred sixty-four".