1655666041 has 4 divisors (see below), whose sum is σ = 1662959952. Its totient is φ = 1648372132.

The previous prime is 1655666003. The next prime is 1655666053. The reversal of 1655666041 is 1406665561.

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 1655666041 - 2¹³ = 1655657849 is a prime.

It is a super-2 number, since 2×1655666041² = 5482460078641227362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1655665985 and 1655666003.

It is not an unprimeable number, because it can be changed into a prime (1655666741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3646615 + ... + 3647068.

It is an arithmetic number, because the mean of its divisors is an integer number (415739988).

Almost surely, 2^1655666041 is an apocalyptic number.

It is an amenable number.

1655666041 is a deficient number, since it is larger than the sum of its proper divisors (7293911).

1655666041 is an equidigital number, since it uses as much as digits as its factorization.

1655666041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7293910.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1655666041 is about 40689.8763945038. The cubic root of 1655666041 is about 1183.0168044664.

The spelling of 1655666041 in words is "one billion, six hundred fifty-five million, six hundred sixty-six thousand, forty-one".