1949266939 has 2 divisors, whose sum is σ = 1949266940. Its totient is φ = 1949266938.

The previous prime is 1949266931. The next prime is 1949266961. The reversal of 1949266939 is 9396629491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1949266939 - 2³ = 1949266931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1949266931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974633469 + 974633470.

It is an arithmetic number, because the mean of its divisors is an integer number (974633470).

Almost surely, 2^1949266939 is an apocalyptic number.

1949266939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949266939 is an equidigital number, since it uses as much as digits as its factorization.

1949266939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 58.

The square root of 1949266939 is about 44150.5032700648. The cubic root of 1949266939 is about 1249.1764044582.

The spelling of 1949266939 in words is "one billion, nine hundred forty-nine million, two hundred sixty-six thousand, nine hundred thirty-nine".