40188103 has 2 divisors, whose sum is σ = 40188104. Its totient is φ = 40188102.

The previous prime is 40188091. The next prime is 40188133. The reversal of 40188103 is 30188104.

40188103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40188103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40188133) 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 as a sum of consecutive naturals, namely, 20094051 + 20094052.

It is an arithmetic number, because the mean of its divisors is an integer number (20094052).

Almost surely, 2^40188103 is an apocalyptic number.

40188103 is a deficient number, since it is larger than the sum of its proper divisors (1).

40188103 is an equidigital number, since it uses as much as digits as its factorization.

40188103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 40188103 is about 6339.4087263719. The cubic root of 40188103 is about 342.5304372048.

Subtracting from 40188103 its reverse (30188104), we obtain a palindrome (9999999).

It can be divided in two parts, 4018 and 8103, that added together give a palindrome (12121).

The spelling of 40188103 in words is "forty million, one hundred eighty-eight thousand, one hundred three".