1874468989 has 2 divisors, whose sum is σ = 1874468990. Its totient is φ = 1874468988.

The previous prime is 1874468933. The next prime is 1874469043. The reversal of 1874468989 is 9898644781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874024100 + 444889 = 43290^2 + 667^2 .

It is an emirp because it is prime and its reverse (9898644781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1874468989 - 2¹¹ = 1874466941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1874468989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1874463989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 937234494 + 937234495.

It is an arithmetic number, because the mean of its divisors is an integer number (937234495).

Almost surely, 2^1874468989 is an apocalyptic number.

It is an amenable number.

1874468989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1874468989 is an equidigital number, since it uses as much as digits as its factorization.

1874468989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 64.

The square root of 1874468989 is about 43295.1381681593. The cubic root of 1874468989 is about 1232.9896185531.

The spelling of 1874468989 in words is "one billion, eight hundred seventy-four million, four hundred sixty-eight thousand, nine hundred eighty-nine".