1649982705 has 64 divisors (see below), whose sum is σ = 3243663360. Its totient is φ = 699335424.

The previous prime is 1649982689. The next prime is 1649982751. The reversal of 1649982705 is 5072899461.

1649982705 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1649982705 - 2⁴ = 1649982689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84967 + ... + 102563.

It is an arithmetic number, because the mean of its divisors is an integer number (50682240).

Almost surely, 2^1649982705 is an apocalyptic number.

1649982705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1649982705 is a deficient number, since it is larger than the sum of its proper divisors (1593680655).

1649982705 is a wasteful number, since it uses less digits than its factorization.

1649982705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17678.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 1649982705 is about 40619.9791358883. The cubic root of 1649982705 is about 1181.6616217846.

The spelling of 1649982705 in words is "one billion, six hundred forty-nine million, nine hundred eighty-two thousand, seven hundred five".