1660393383 has 16 divisors (see below), whose sum is σ = 2557184256. Its totient is φ = 947104640.

The previous prime is 1660393373. The next prime is 1660393409. The reversal of 1660393383 is 3833930661.

It is a cyclic number.

It is not a de Polignac number, because 1660393383 - 2⁴ = 1660393367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660393303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479291 + ... + 1480412.

It is an arithmetic number, because the mean of its divisors is an integer number (159824016).

Almost surely, 2^1660393383 is an apocalyptic number.

1660393383 is a deficient number, since it is larger than the sum of its proper divisors (896790873).

1660393383 is a wasteful number, since it uses less digits than its factorization.

1660393383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959734.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 1660393383 is about 40747.9248919500. The cubic root of 1660393383 is about 1184.1416711621.

The spelling of 1660393383 in words is "one billion, six hundred sixty million, three hundred ninety-three thousand, three hundred eighty-three".