1601949 has 8 divisors (see below), whose sum is σ = 2142112. Its totient is φ = 1064880.

The previous prime is 1601869. The next prime is 1601953. The reversal of 1601949 is 9491061.

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

It is not a de Polignac number, because 1601949 - 2¹⁵ = 1569181 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 (1601969) 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 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (267764).

2^1601949 is an apocalyptic number.

It is an amenable number.

1601949 is a deficient number, since it is larger than the sum of its proper divisors (540163).

1601949 is a wasteful number, since it uses less digits than its factorization.

1601949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1601949 is about 1265.6812394912. The cubic root of 1601949 is about 117.0081811797.

The spelling of 1601949 in words is "one million, six hundred one thousand, nine hundred forty-nine".