1603378113 has 4 divisors (see below), whose sum is σ = 2137837488. Its totient is φ = 1068918740.

The previous prime is 1603378111. The next prime is 1603378121. The reversal of 1603378113 is 3118733061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1603378113 - 2¹ = 1603378111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1603378111) 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, 267229683 + ... + 267229688.

It is an arithmetic number, because the mean of its divisors is an integer number (534459372).

Almost surely, 2^1603378113 is an apocalyptic number.

It is an amenable number.

1603378113 is a deficient number, since it is larger than the sum of its proper divisors (534459375).

1603378113 is an equidigital number, since it uses as much as digits as its factorization.

1603378113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534459374.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1603378113 is about 40042.2041476240. The cubic root of 1603378113 is about 1170.4296551884.

The spelling of 1603378113 in words is "one billion, six hundred three million, three hundred seventy-eight thousand, one hundred thirteen".