1995000253 has 2 divisors, whose sum is σ = 1995000254. Its totient is φ = 1995000252.

The previous prime is 1995000239. The next prime is 1995000313. The reversal of 1995000253 is 3520005991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1852269444 + 142730809 = 43038^2 + 11947^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995000253 - 2²⁹ = 1458129341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1995000233) 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, 997500126 + 997500127.

It is an arithmetic number, because the mean of its divisors is an integer number (997500127).

Almost surely, 2^1995000253 is an apocalyptic number.

It is an amenable number.

1995000253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995000253 is an equidigital number, since it uses as much as digits as its factorization.

1995000253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 1995000253 is about 44665.4257004229. The cubic root of 1995000253 is about 1258.8702927396.

The spelling of 1995000253 in words is "one billion, nine hundred ninety-five million, two hundred fifty-three", and thus it is an aban number.