1649488 has 10 divisors (see below), whose sum is σ = 3195914. Its totient is φ = 824736.

The previous prime is 1649449. The next prime is 1649489. The reversal of 1649488 is 8849461.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 238144 = 1188^2 + 488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1649488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51531 + ... + 51562.

2^1649488 is an apocalyptic number.

1649488 is the 687-th centered heptagonal number.

It is an amenable number.

1649488 is a deficient number, since it is larger than the sum of its proper divisors (1546426).

1649488 is a wasteful number, since it uses less digits than its factorization.

1649488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103101 (or 103095 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 1649488 is about 1284.3239466739. The cubic root of 1649488 is about 118.1543513002.

The spelling of 1649488 in words is "one million, six hundred forty-nine thousand, four hundred eighty-eight".