1966142033 has 2 divisors, whose sum is σ = 1966142034. Its totient is φ = 1966142032.

The previous prime is 1966142027. The next prime is 1966142041. The reversal of 1966142033 is 3302416691.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947280384 + 18861649 = 44128^2 + 4343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966142033 - 2¹² = 1966137937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1966141984 and 1966142002.

It is not a weakly prime, because it can be changed into another prime (1966142083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983071016 + 983071017.

It is an arithmetic number, because the mean of its divisors is an integer number (983071017).

Almost surely, 2^1966142033 is an apocalyptic number.

It is an amenable number.

1966142033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966142033 is an equidigital number, since it uses as much as digits as its factorization.

1966142033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 1966142033 is about 44341.2001754576. The cubic root of 1966142033 is about 1252.7708205446.

The spelling of 1966142033 in words is "one billion, nine hundred sixty-six million, one hundred forty-two thousand, thirty-three".