1603973 has 4 divisors (see below), whose sum is σ = 1833120. Its totient is φ = 1374828.

The previous prime is 1603963. The next prime is 1604003. The reversal of 1603973 is 3793061.

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 not a de Polignac number, because 1603973 - 2⁴ = 1603957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114563 + ... + 114576.

It is an arithmetic number, because the mean of its divisors is an integer number (458280).

2^1603973 is an apocalyptic number.

It is an amenable number.

1603973 is a deficient number, since it is larger than the sum of its proper divisors (229147).

1603973 is an equidigital number, since it uses as much as digits as its factorization.

1603973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229146.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 1603973 is about 1266.4805565029. The cubic root of 1603973 is about 117.0574388629.

The spelling of 1603973 in words is "one million, six hundred three thousand, nine hundred seventy-three".