1600491 has 8 divisors (see below), whose sum is σ = 2179584. Its totient is φ = 1044200.

The previous prime is 1600483. The next prime is 1600519. The reversal of 1600491 is 1940061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1600491 - 2³ = 1600483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1600421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5535 + ... + 5816.

It is an arithmetic number, because the mean of its divisors is an integer number (272448).

2^1600491 is an apocalyptic number.

1600491 is a deficient number, since it is larger than the sum of its proper divisors (579093).

1600491 is a wasteful number, since it uses less digits than its factorization.

1600491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1600491 is about 1265.1051339711. The cubic root of 1600491 is about 116.9726724108.

The spelling of 1600491 in words is "one million, six hundred thousand, four hundred ninety-one".