1949355049 has 2 divisors, whose sum is σ = 1949355050. Its totient is φ = 1949355048.

The previous prime is 1949355013. The next prime is 1949355119. The reversal of 1949355049 is 9405539491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1435879449 + 513475600 = 37893^2 + 22660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1949355049 - 2²³ = 1940966441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1949354993 and 1949355011.

It is not a weakly prime, because it can be changed into another prime (1949155049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974677524 + 974677525.

It is an arithmetic number, because the mean of its divisors is an integer number (974677525).

Almost surely, 2^1949355049 is an apocalyptic number.

It is an amenable number.

1949355049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949355049 is an equidigital number, since it uses as much as digits as its factorization.

1949355049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 1949355049 is about 44151.5010956593. The cubic root of 1949355049 is about 1249.1952257686.

The spelling of 1949355049 in words is "one billion, nine hundred forty-nine million, three hundred fifty-five thousand, forty-nine".