1953425849 has 2 divisors, whose sum is σ = 1953425850. Its totient is φ = 1953425848.

The previous prime is 1953425843. The next prime is 1953425861. The reversal of 1953425849 is 9485243591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1711063225 + 242362624 = 41365^2 + 15568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1953425849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1953425797 and 1953425806.

It is not a weakly prime, because it can be changed into another prime (1953425843) 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, 976712924 + 976712925.

It is an arithmetic number, because the mean of its divisors is an integer number (976712925).

Almost surely, 2^1953425849 is an apocalyptic number.

It is an amenable number.

1953425849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953425849 is an equidigital number, since it uses as much as digits as its factorization.

1953425849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 50.

The square root of 1953425849 is about 44197.5774109849. The cubic root of 1953425849 is about 1250.0641778249.

The spelling of 1953425849 in words is "one billion, nine hundred fifty-three million, four hundred twenty-five thousand, eight hundred forty-nine".