19957033 has 2 divisors, whose sum is σ = 19957034. Its totient is φ = 19957032.

The previous prime is 19957009. The next prime is 19957039. The reversal of 19957033 is 33075991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18731584 + 1225449 = 4328^2 + 1107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19957033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19956983 and 19957001.

It is not a weakly prime, because it can be changed into another prime (19957039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9978516 + 9978517.

It is an arithmetic number, because the mean of its divisors is an integer number (9978517).

Almost surely, 2^19957033 is an apocalyptic number.

It is an amenable number.

19957033 is a deficient number, since it is larger than the sum of its proper divisors (1).

19957033 is an equidigital number, since it uses as much as digits as its factorization.

19957033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 19957033 is about 4467.3295154936. The cubic root of 19957033 is about 271.2472383220.

The spelling of 19957033 in words is "nineteen million, nine hundred fifty-seven thousand, thirty-three".