1989466433 has 2 divisors, whose sum is σ = 1989466434. Its totient is φ = 1989466432.

The previous prime is 1989466399. The next prime is 1989466469. The reversal of 1989466433 is 3346649891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1982742784 + 6723649 = 44528^2 + 2593^2 .

It is a cyclic number.

It is not a de Polignac number, because 1989466433 - 2⁸ = 1989466177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1989466333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994733216 + 994733217.

It is an arithmetic number, because the mean of its divisors is an integer number (994733217).

Almost surely, 2^1989466433 is an apocalyptic number.

It is an amenable number.

1989466433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1989466433 is an equidigital number, since it uses as much as digits as its factorization.

1989466433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 53.

The square root of 1989466433 is about 44603.4352152387. The cubic root of 1989466433 is about 1257.7052448091.

It can be divided in two parts, 198946 and 6433, that added together give a cube (205379 = 59³).

The spelling of 1989466433 in words is "one billion, nine hundred eighty-nine million, four hundred sixty-six thousand, four hundred thirty-three".