1966148741 has 2 divisors, whose sum is σ = 1966148742. Its totient is φ = 1966148740.

The previous prime is 1966148731. The next prime is 1966148749. The reversal of 1966148741 is 1478416691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1965592225 + 556516 = 44335^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966148741 - 2³⁰ = 892406917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966148749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983074370 + 983074371.

It is an arithmetic number, because the mean of its divisors is an integer number (983074371).

Almost surely, 2^1966148741 is an apocalyptic number.

It is an amenable number.

1966148741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966148741 is an equidigital number, since it uses as much as digits as its factorization.

1966148741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The square root of 1966148741 is about 44341.2758161061. The cubic root of 1966148741 is about 1252.7722452598.

The spelling of 1966148741 in words is "one billion, nine hundred sixty-six million, one hundred forty-eight thousand, seven hundred forty-one".