1549947011 has 2 divisors, whose sum is σ = 1549947012. Its totient is φ = 1549947010.

The previous prime is 1549946971. The next prime is 1549947019. The reversal of 1549947011 is 1107499451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1549947011 - 2¹⁰ = 1549945987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1549947011.

It is not a weakly prime, because it can be changed into another prime (1549947019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774973505 + 774973506.

It is an arithmetic number, because the mean of its divisors is an integer number (774973506).

Almost surely, 2^1549947011 is an apocalyptic number.

1549947011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1549947011 is an equidigital number, since it uses as much as digits as its factorization.

1549947011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 1549947011 is about 39369.3664033345. The cubic root of 1549947011 is about 1157.2813391815.

The spelling of 1549947011 in words is "one billion, five hundred forty-nine million, nine hundred forty-seven thousand, eleven".