1866850033 has 2 divisors, whose sum is σ = 1866850034. Its totient is φ = 1866850032.

The previous prime is 1866849979. The next prime is 1866850049. The reversal of 1866850033 is 3300586681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1866844849 + 5184 = 43207^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1866850033 - 2⁹ = 1866849521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1866850333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933425016 + 933425017.

It is an arithmetic number, because the mean of its divisors is an integer number (933425017).

Almost surely, 2^1866850033 is an apocalyptic number.

It is an amenable number.

1866850033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866850033 is an equidigital number, since it uses as much as digits as its factorization.

1866850033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1866850033 is about 43207.0599902377. The cubic root of 1866850033 is about 1231.3168158816.

The spelling of 1866850033 in words is "one billion, eight hundred sixty-six million, eight hundred fifty thousand, thirty-three".