1949539 has 2 divisors, whose sum is σ = 1949540. Its totient is φ = 1949538.

The previous prime is 1949531. The next prime is 1949557. The reversal of 1949539 is 9359491.

It is a weak prime.

It is an emirp because it is prime and its reverse (9359491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1949539 - 2³ = 1949531 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (1949531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974769 + 974770.

It is an arithmetic number, because the mean of its divisors is an integer number (974770).

2^1949539 is an apocalyptic number.

1949539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1949539 is an equidigital number, since it uses as much as digits as its factorization.

1949539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 1949539 is about 1396.2589301415. The cubic root of 1949539 is about 124.9234517992.

The spelling of 1949539 in words is "one million, nine hundred forty-nine thousand, five hundred thirty-nine".