1660053505 has 16 divisors (see below), whose sum is σ = 2185735104. Its totient is φ = 1200326080.

The previous prime is 1660053481. The next prime is 1660053511. The reversal of 1660053505 is 5053500661.

It is not a de Polignac number, because 1660053505 - 2⁹ = 1660052993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77719 + ... + 96748.

It is an arithmetic number, because the mean of its divisors is an integer number (136608444).

Almost surely, 2^1660053505 is an apocalyptic number.

It is an amenable number.

1660053505 is a deficient number, since it is larger than the sum of its proper divisors (525681599).

1660053505 is a wasteful number, since it uses less digits than its factorization.

1660053505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174656.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 1660053505 is about 40743.7541839237. The cubic root of 1660053505 is about 1184.0608687910.

The spelling of 1660053505 in words is "one billion, six hundred sixty million, fifty-three thousand, five hundred five".