1992475549 has 2 divisors, whose sum is σ = 1992475550. Its totient is φ = 1992475548.

The previous prime is 1992475517. The next prime is 1992475561. The reversal of 1992475549 is 9455742991.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1942164900 + 50310649 = 44070^2 + 7093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992475549 - 2⁵ = 1992475517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1992475549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1992475249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996237774 + 996237775.

It is an arithmetic number, because the mean of its divisors is an integer number (996237775).

Almost surely, 2^1992475549 is an apocalyptic number.

It is an amenable number.

1992475549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1992475549 is an equidigital number, since it uses as much as digits as its factorization.

1992475549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 55.

The square root of 1992475549 is about 44637.1543559847. The cubic root of 1992475549 is about 1258.3390285587.

The spelling of 1992475549 in words is "one billion, nine hundred ninety-two million, four hundred seventy-five thousand, five hundred forty-nine".