1949818907 has 2 divisors, whose sum is σ = 1949818908. Its totient is φ = 1949818906.

The previous prime is 1949818901. The next prime is 1949818909. The reversal of 1949818907 is 7098189491.

It is a strong prime.

It is an emirp because it is prime and its reverse (7098189491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1949818907 - 2¹⁶ = 1949753371 is a prime.

Together with 1949818909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1949818901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974909453 + 974909454.

It is an arithmetic number, because the mean of its divisors is an integer number (974909454).

Almost surely, 2^1949818907 is an apocalyptic number.

1949818907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949818907 is an equidigital number, since it uses as much as digits as its factorization.

1949818907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The square root of 1949818907 is about 44156.7538095816. The cubic root of 1949818907 is about 1249.2943018270.

The spelling of 1949818907 in words is "one billion, nine hundred forty-nine million, eight hundred eighteen thousand, nine hundred seven".