1656106103 has 4 divisors (see below), whose sum is σ = 1713213240. Its totient is φ = 1598998968.

The previous prime is 1656106097. The next prime is 1656106117. The reversal of 1656106103 is 3016016561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3016016561 = 257 ⋅11735473.

It is a cyclic number.

It is not a de Polignac number, because 1656106103 - 2¹⁰ = 1656105079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 57107107 = 1656106103 / (1 + 6 + 5 + 6 + 1 + 0 + 6 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656106163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28553525 + ... + 28553582.

It is an arithmetic number, because the mean of its divisors is an integer number (428303310).

Almost surely, 2^1656106103 is an apocalyptic number.

1656106103 is a deficient number, since it is larger than the sum of its proper divisors (57107137).

1656106103 is an equidigital number, since it uses as much as digits as its factorization.

1656106103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57107136.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1656106103 is about 40695.2835473596. The cubic root of 1656106103 is about 1183.1216071282.

The spelling of 1656106103 in words is "one billion, six hundred fifty-six million, one hundred six thousand, one hundred three".