1649141 has 4 divisors (see below), whose sum is σ = 1776012. Its totient is φ = 1522272.

The previous prime is 1649129. The next prime is 1649147. The reversal of 1649141 is 1419461.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1094116 + 555025 = 1046^2 + 745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649141 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 1649141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649147) 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, 63416 + ... + 63441.

It is an arithmetic number, because the mean of its divisors is an integer number (444003).

2^1649141 is an apocalyptic number.

It is an amenable number.

1649141 is a deficient number, since it is larger than the sum of its proper divisors (126871).

1649141 is a wasteful number, since it uses less digits than its factorization.

1649141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126870.

The product of its digits is 864, while the sum is 26.

The square root of 1649141 is about 1284.1888490405. The cubic root of 1649141 is about 118.1460654088.

The spelling of 1649141 in words is "one million, six hundred forty-nine thousand, one hundred forty-one".