20190433 has 2 divisors, whose sum is σ = 20190434. Its totient is φ = 20190432.

The previous prime is 20190421. The next prime is 20190439. The reversal of 20190433 is 33409102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18249984 + 1940449 = 4272^2 + 1393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20190433 is a prime.

It is not a weakly prime, because it can be changed into another prime (20190439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095216 + 10095217.

It is an arithmetic number, because the mean of its divisors is an integer number (10095217).

Almost surely, 2^20190433 is an apocalyptic number.

It is an amenable number.

20190433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20190433 is an equidigital number, since it uses as much as digits as its factorization.

20190433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20190433 is about 4493.3765700195. The cubic root of 20190433 is about 272.3005661377.

Adding to 20190433 its reverse (33409102), we get a palindrome (53599535).

The spelling of 20190433 in words is "twenty million, one hundred ninety thousand, four hundred thirty-three".