1601039 has 4 divisors (see below), whose sum is σ = 1746600. Its totient is φ = 1455480.

The previous prime is 1601023. The next prime is 1601051. The reversal of 1601039 is 9301061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1601039 - 2⁴ = 1601023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72764 + ... + 72785.

It is an arithmetic number, because the mean of its divisors is an integer number (436650).

2^1601039 is an apocalyptic number.

1601039 is a deficient number, since it is larger than the sum of its proper divisors (145561).

1601039 is a wasteful number, since it uses less digits than its factorization.

1601039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145560.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1601039 is about 1265.3216982254. The cubic root of 1601039 is about 116.9860211706.

The spelling of 1601039 in words is "one million, six hundred one thousand, thirty-nine".