1649561050 has 12 divisors (see below), whose sum is σ = 3068183646. Its totient is φ = 659824400.

The previous prime is 1649561033. The next prime is 1649561063. The reversal of 1649561050 is 501659461.

It can be written as a sum of positive squares in 3 ways, for example, as 1101111489 + 548449561 = 33183^2 + 23419^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16495561 + ... + 16495660.

Almost surely, 2^1649561050 is an apocalyptic number.

1649561050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1649561050 is a deficient number, since it is larger than the sum of its proper divisors (1418622596).

1649561050 is a wasteful number, since it uses less digits than its factorization.

1649561050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32991233 (or 32991228 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1649561050 is about 40614.7885627883. The cubic root of 1649561050 is about 1181.5609548748.

The spelling of 1649561050 in words is "one billion, six hundred forty-nine million, five hundred sixty-one thousand, fifty".