1665060141 has 4 divisors (see below), whose sum is σ = 2220080192. Its totient is φ = 1110040092.

The previous prime is 1665060113. The next prime is 1665060157. The reversal of 1665060141 is 1410605661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1410605661 = 3 ⋅470201887.

It is not a de Polignac number, because 1665060141 - 2⁵ = 1665060109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1665060099 and 1665060108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665060841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277510021 + ... + 277510026.

It is an arithmetic number, because the mean of its divisors is an integer number (555020048).

Almost surely, 2^1665060141 is an apocalyptic number.

It is an amenable number.

1665060141 is a deficient number, since it is larger than the sum of its proper divisors (555020051).

1665060141 is an equidigital number, since it uses as much as digits as its factorization.

1665060141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555020050.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1665060141 is about 40805.1484619282. The cubic root of 1665060141 is about 1185.2500296710.

The spelling of 1665060141 in words is "one billion, six hundred sixty-five million, sixty thousand, one hundred forty-one".