1628091103 has 2 divisors, whose sum is σ = 1628091104. Its totient is φ = 1628091102.

The previous prime is 1628091083. The next prime is 1628091109. The reversal of 1628091103 is 3011908261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1628091103 - 2⁹ = 1628090591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628091109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814045551 + 814045552.

It is an arithmetic number, because the mean of its divisors is an integer number (814045552).

Almost surely, 2^1628091103 is an apocalyptic number.

1628091103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628091103 is an equidigital number, since it uses as much as digits as its factorization.

1628091103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1628091103 is about 40349.6109398839. The cubic root of 1628091103 is about 1176.4123299111.

Adding to 1628091103 its reverse (3011908261), we get a palindrome (4639999364).

The spelling of 1628091103 in words is "one billion, six hundred twenty-eight million, ninety-one thousand, one hundred three".