1649215112 has 16 divisors (see below), whose sum is σ = 3119645340. Its totient is φ = 817309696.

The previous prime is 1649215111. The next prime is 1649215129. The reversal of 1649215112 is 2115129461.

It can be written as a sum of positive squares in 2 ways, for example, as 1189284196 + 459930916 = 34486^2 + 21446^2 .

It is not an unprimeable number, because it can be changed into a prime (1649215111) 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 3 ways as a sum of consecutive naturals, for example, 911273 + ... + 913080.

Almost surely, 2^1649215112 is an apocalyptic number.

It is an amenable number.

1649215112 is a deficient number, since it is larger than the sum of its proper divisors (1470430228).

1649215112 is a wasteful number, since it uses less digits than its factorization.

1649215112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824472 (or 1824468 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 1649215112 is about 40610.5295705436. The cubic root of 1649215112 is about 1181.4783520089.

The spelling of 1649215112 in words is "one billion, six hundred forty-nine million, two hundred fifteen thousand, one hundred twelve".