1968064541 has 2 divisors, whose sum is σ = 1968064542. Its totient is φ = 1968064540.

The previous prime is 1968064537. The next prime is 1968064577. The reversal of 1968064541 is 1454608691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081752100 + 886312441 = 32890^2 + 29771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968064541 - 2² = 1968064537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1968064492 and 1968064501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1968064531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984032270 + 984032271.

It is an arithmetic number, because the mean of its divisors is an integer number (984032271).

Almost surely, 2^1968064541 is an apocalyptic number.

It is an amenable number.

1968064541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968064541 is an equidigital number, since it uses as much as digits as its factorization.

1968064541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1968064541 is about 44362.8734529223. The cubic root of 1968064541 is about 1253.1790103408.

The spelling of 1968064541 in words is "one billion, nine hundred sixty-eight million, sixty-four thousand, five hundred forty-one".