1995954049 has 2 divisors, whose sum is σ = 1995954050. Its totient is φ = 1995954048.

The previous prime is 1995954041. The next prime is 1995954073. The reversal of 1995954049 is 9404595991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1936000000 + 59954049 = 44000^2 + 7743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995954049 - 2³ = 1995954041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1995954041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997977024 + 997977025.

It is an arithmetic number, because the mean of its divisors is an integer number (997977025).

Almost surely, 2^1995954049 is an apocalyptic number.

It is an amenable number.

1995954049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995954049 is an equidigital number, since it uses as much as digits as its factorization.

1995954049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The square root of 1995954049 is about 44676.1015420997. The cubic root of 1995954049 is about 1259.0708798739.

The spelling of 1995954049 in words is "one billion, nine hundred ninety-five million, nine hundred fifty-four thousand, forty-nine".