1813948103 has 8 divisors (see below), whose sum is σ = 1979890176. Its totient is φ = 1648179000.

The previous prime is 1813948079. The next prime is 1813948109. The reversal of 1813948103 is 3018493181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1813948103 - 2⁸ = 1813947847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813948109) 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 7 ways as a sum of consecutive naturals, for example, 20801 + ... + 63722.

It is an arithmetic number, because the mean of its divisors is an integer number (247486272).

Almost surely, 2^1813948103 is an apocalyptic number.

1813948103 is a deficient number, since it is larger than the sum of its proper divisors (165942073).

1813948103 is a wasteful number, since it uses less digits than its factorization.

1813948103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86485.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1813948103 is about 42590.4696264317. The cubic root of 1813948103 is about 1219.5743617313.

The spelling of 1813948103 in words is "one billion, eight hundred thirteen million, nine hundred forty-eight thousand, one hundred three".