1660120133 has 8 divisors (see below), whose sum is σ = 1916065920. Its totient is φ = 1408870800.

The previous prime is 1660120097. The next prime is 1660120139. The reversal of 1660120133 is 3310210661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1660120133 - 2⁶ = 1660120069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1660120099 and 1660120108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660120139) 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, 1173353 + ... + 1174766.

It is an arithmetic number, because the mean of its divisors is an integer number (239508240).

Almost surely, 2^1660120133 is an apocalyptic number.

It is an amenable number.

1660120133 is a deficient number, since it is larger than the sum of its proper divisors (255945787).

1660120133 is a wasteful number, since it uses less digits than its factorization.

1660120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348227.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1660120133 is about 40744.5718225140. The cubic root of 1660120133 is about 1184.0767097567.

Adding to 1660120133 its reverse (3310210661), we get a palindrome (4970330794).

The spelling of 1660120133 in words is "one billion, six hundred sixty million, one hundred twenty thousand, one hundred thirty-three".