1949143330073 has 4 divisors (see below), whose sum is σ = 1951365843300. Its totient is φ = 1946920816848.

The previous prime is 1949143330039. The next prime is 1949143330087. The reversal of 1949143330073 is 3700333419491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1427566156864 + 521577173209 = 1194808^2 + 722203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1949143330073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949143330873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111255298 + ... + 1111257051.

It is an arithmetic number, because the mean of its divisors is an integer number (487841460825).

Almost surely, 2^{1949143330073} is an apocalyptic number.

It is an amenable number.

1949143330073 is a deficient number, since it is larger than the sum of its proper divisors (2222513227).

1949143330073 is an equidigital number, since it uses as much as digits as its factorization.

1949143330073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222513226.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 1949143330073 in words is "one trillion, nine hundred forty-nine billion, one hundred forty-three million, three hundred thirty thousand, seventy-three".