1649416 has 8 divisors (see below), whose sum is σ = 3092670. Its totient is φ = 824704.

The previous prime is 1649411. The next prime is 1649419. The reversal of 1649416 is 6149461.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 417316 = 1110^2 + 646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1649411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103081 + ... + 103096.

2^1649416 is an apocalyptic number.

It is an amenable number.

1649416 is a deficient number, since it is larger than the sum of its proper divisors (1443254).

1649416 is a wasteful number, since it uses less digits than its factorization.

1649416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206183 (or 206179 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 1649416 is about 1284.2959160567. The cubic root of 1649416 is about 118.1526321330.

The spelling of 1649416 in words is "one million, six hundred forty-nine thousand, four hundred sixteen".