1872242773 has 2 divisors, whose sum is σ = 1872242774. Its totient is φ = 1872242772.

The previous prime is 1872242761. The next prime is 1872242797. The reversal of 1872242773 is 3772422781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1513443409 + 358799364 = 38903^2 + 18942^2 .

It is an emirp because it is prime and its reverse (3772422781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1872242773 - 2⁹ = 1872242261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1872252773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936121386 + 936121387.

It is an arithmetic number, because the mean of its divisors is an integer number (936121387).

Almost surely, 2^1872242773 is an apocalyptic number.

It is an amenable number.

1872242773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872242773 is an equidigital number, since it uses as much as digits as its factorization.

1872242773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 43.

The square root of 1872242773 is about 43269.4207610872. The cubic root of 1872242773 is about 1232.5013045092.

The spelling of 1872242773 in words is "one billion, eight hundred seventy-two million, two hundred forty-two thousand, seven hundred seventy-three".