1603139 has 2 divisors, whose sum is σ = 1603140. Its totient is φ = 1603138.

The previous prime is 1603111. The next prime is 1603159. The reversal of 1603139 is 9313061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1603139 - 2⁸ = 1602883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1603159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801569 + 801570.

It is an arithmetic number, because the mean of its divisors is an integer number (801570).

2^1603139 is an apocalyptic number.

1603139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603139 is an equidigital number, since it uses as much as digits as its factorization.

1603139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1603139 is about 1266.1512547875. The cubic root of 1603139 is about 117.0371469940.

The spelling of 1603139 in words is "one million, six hundred three thousand, one hundred thirty-nine".