1442511949 has 2 divisors, whose sum is σ = 1442511950. Its totient is φ = 1442511948.

The previous prime is 1442511947. The next prime is 1442511989. The reversal of 1442511949 is 9491152441.

It is an a-pointer prime, because the next prime (1442511989) can be obtained adding 1442511949 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1441341225 + 1170724 = 37965^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442511949 - 2¹ = 1442511947 is a prime.

Together with 1442511947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442511947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721255974 + 721255975.

It is an arithmetic number, because the mean of its divisors is an integer number (721255975).

Almost surely, 2^1442511949 is an apocalyptic number.

It is an amenable number.

1442511949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442511949 is an equidigital number, since it uses as much as digits as its factorization.

1442511949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 1442511949 is about 37980.4153347485. The cubic root of 1442511949 is about 1129.8994739195.

The spelling of 1442511949 in words is "one billion, four hundred forty-two million, five hundred eleven thousand, nine hundred forty-nine".