1641751633 has 2 divisors, whose sum is σ = 1641751634. Its totient is φ = 1641751632.

The previous prime is 1641751627. The next prime is 1641751637. The reversal of 1641751633 is 3361571461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038901824 + 602849809 = 32232^2 + 24553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1641751633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641751592 and 1641751601.

It is not a weakly prime, because it can be changed into another prime (1641751637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820875816 + 820875817.

It is an arithmetic number, because the mean of its divisors is an integer number (820875817).

Almost surely, 2^1641751633 is an apocalyptic number.

It is an amenable number.

1641751633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641751633 is an equidigital number, since it uses as much as digits as its factorization.

1641751633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 1641751633 is about 40518.5344379581. The cubic root of 1641751633 is about 1179.6934071320.

The spelling of 1641751633 in words is "one billion, six hundred forty-one million, seven hundred fifty-one thousand, six hundred thirty-three".