1643045483 has 2 divisors, whose sum is σ = 1643045484. Its totient is φ = 1643045482.

The previous prime is 1643045471. The next prime is 1643045513. The reversal of 1643045483 is 3845403461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1643045483 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1643045783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821522741 + 821522742.

It is an arithmetic number, because the mean of its divisors is an integer number (821522742).

Almost surely, 2^1643045483 is an apocalyptic number.

1643045483 is a deficient number, since it is larger than the sum of its proper divisors (1).

1643045483 is an equidigital number, since it uses as much as digits as its factorization.

1643045483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 1643045483 is about 40534.4974435357. The cubic root of 1643045483 is about 1180.0032277514.

The spelling of 1643045483 in words is "one billion, six hundred forty-three million, forty-five thousand, four hundred eighty-three".