1920335497 has 2 divisors, whose sum is σ = 1920335498. Its totient is φ = 1920335496.

The previous prime is 1920335471. The next prime is 1920335519. The reversal of 1920335497 is 7945330291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181365641 + 738969856 = 34371^2 + 27184^2 .

It is an emirp because it is prime and its reverse (7945330291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1920335497 - 2¹¹ = 1920333449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1920035497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960167748 + 960167749.

It is an arithmetic number, because the mean of its divisors is an integer number (960167749).

Almost surely, 2^1920335497 is an apocalyptic number.

It is an amenable number.

1920335497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920335497 is an equidigital number, since it uses as much as digits as its factorization.

1920335497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 1920335497 is about 43821.6327514163. The cubic root of 1920335497 is about 1242.9653917198.

The spelling of 1920335497 in words is "one billion, nine hundred twenty million, three hundred thirty-five thousand, four hundred ninety-seven".