1668348903 has 24 divisors (see below), whose sum is σ = 2535530880. Its totient is φ = 972635040.

The previous prime is 1668348853. The next prime is 1668348911. The reversal of 1668348903 is 3098438661.

It is not a de Polignac number, because 1668348903 - 2¹³ = 1668340711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668348943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76963 + ... + 96228.

It is an arithmetic number, because the mean of its divisors is an integer number (105647120).

Almost surely, 2^1668348903 is an apocalyptic number.

1668348903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1668348903 is a deficient number, since it is larger than the sum of its proper divisors (867181977).

1668348903 is a wasteful number, since it uses less digits than its factorization.

1668348903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173239 (or 173226 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 1668348903 is about 40845.4269533322. The cubic root of 1668348903 is about 1186.0298697057.

The spelling of 1668348903 in words is "one billion, six hundred sixty-eight million, three hundred forty-eight thousand, nine hundred three".