1649383705 has 16 divisors (see below), whose sum is σ = 2066601600. Its totient is φ = 1261351168.

The previous prime is 1649383699. The next prime is 1649383717. The reversal of 1649383705 is 5073839461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1649383705 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237969 + ... + 244801.

It is an arithmetic number, because the mean of its divisors is an integer number (129162600).

Almost surely, 2^1649383705 is an apocalyptic number.

It is an amenable number.

1649383705 is a deficient number, since it is larger than the sum of its proper divisors (417217895).

1649383705 is a wasteful number, since it uses less digits than its factorization.

1649383705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1649383705 is about 40612.6052476322. The cubic root of 1649383705 is about 1181.5186099861.

The spelling of 1649383705 in words is "one billion, six hundred forty-nine million, three hundred eighty-three thousand, seven hundred five".