1949934149 has 2 divisors, whose sum is σ = 1949934150. Its totient is φ = 1949934148.

The previous prime is 1949934137. The next prime is 1949934157. The reversal of 1949934149 is 9414399491.

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., 1423552900 + 526381249 = 37730^2 + 22943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1949934149 - 2¹² = 1949930053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1949934149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1949934199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974967074 + 974967075.

It is an arithmetic number, because the mean of its divisors is an integer number (974967075).

Almost surely, 2^1949934149 is an apocalyptic number.

It is an amenable number.

1949934149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949934149 is an equidigital number, since it uses as much as digits as its factorization.

1949934149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The square root of 1949934149 is about 44158.0587095946. The cubic root of 1949934149 is about 1249.3189140850.

The spelling of 1949934149 in words is "one billion, nine hundred forty-nine million, nine hundred thirty-four thousand, one hundred forty-nine".