1656065041 has 4 divisors (see below), whose sum is σ = 1684134000. Its totient is φ = 1627996084.

The previous prime is 1656065009. The next prime is 1656065057. The reversal of 1656065041 is 1405606561.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1656065041 - 2⁵ = 1656065009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1656064988 and 1656065006.

It is not an unprimeable number, because it can be changed into a prime (1656060041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14034391 + ... + 14034508.

It is an arithmetic number, because the mean of its divisors is an integer number (421033500).

Almost surely, 2^1656065041 is an apocalyptic number.

It is an amenable number.

1656065041 is a deficient number, since it is larger than the sum of its proper divisors (28068959).

1656065041 is an equidigital number, since it uses as much as digits as its factorization.

1656065041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28068958.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1656065041 is about 40694.7790385941. The cubic root of 1656065041 is about 1183.1118288213. Note that the first 3 decimals are identical.

The spelling of 1656065041 in words is "one billion, six hundred fifty-six million, sixty-five thousand, forty-one".