1649526651 has 6 divisors (see below), whose sum is σ = 2382649620. Its totient is φ = 1099684428.

The previous prime is 1649526649. The next prime is 1649526679. The reversal of 1649526651 is 1566259461.

1649526651 is a `hidden beast` number, since 1 + 64 + 9 + 526 + 65 + 1 = 666.

It is not a de Polignac number, because 1649526651 - 2¹ = 1649526649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1649526597 and 1649526606.

It is not an unprimeable number, because it can be changed into a prime (1649526601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91640361 + ... + 91640378.

It is an arithmetic number, because the mean of its divisors is an integer number (397108270).

Almost surely, 2^1649526651 is an apocalyptic number.

1649526651 is a deficient number, since it is larger than the sum of its proper divisors (733122969).

1649526651 is a wasteful number, since it uses less digits than its factorization.

1649526651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183280745 (or 183280742 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 1649526651 is about 40614.3650818279. The cubic root of 1649526651 is about 1181.5527416196.

The spelling of 1649526651 in words is "one billion, six hundred forty-nine million, five hundred twenty-six thousand, six hundred fifty-one".