1651107641 has 2 divisors, whose sum is σ = 1651107642. Its totient is φ = 1651107640.

The previous prime is 1651107637. The next prime is 1651107659. The reversal of 1651107641 is 1467011561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1251107641 + 400000000 = 35371^2 + 20000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651107641 - 2² = 1651107637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1651107598 and 1651107607.

It is not a weakly prime, because it can be changed into another prime (1651107631) 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 as a sum of consecutive naturals, namely, 825553820 + 825553821.

It is an arithmetic number, because the mean of its divisors is an integer number (825553821).

Almost surely, 2^1651107641 is an apocalyptic number.

It is an amenable number.

1651107641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651107641 is an equidigital number, since it uses as much as digits as its factorization.

1651107641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1651107641 is about 40633.8238540258. The cubic root of 1651107641 is about 1181.9301077734.

The spelling of 1651107641 in words is "one billion, six hundred fifty-one million, one hundred seven thousand, six hundred forty-one".