1952774489 has 2 divisors, whose sum is σ = 1952774490. Its totient is φ = 1952774488.

The previous prime is 1952774459. The next prime is 1952774531. The reversal of 1952774489 is 9844772591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1803446089 + 149328400 = 42467^2 + 12220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1952774489 - 2⁸ = 1952774233 is a prime.

It is a super-2 number, since 2×1952774489² = 7626656409778422242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1952774459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976387244 + 976387245.

It is an arithmetic number, because the mean of its divisors is an integer number (976387245).

Almost surely, 2^1952774489 is an apocalyptic number.

It is an amenable number.

1952774489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952774489 is an equidigital number, since it uses as much as digits as its factorization.

1952774489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The square root of 1952774489 is about 44190.2080669462. The cubic root of 1952774489 is about 1249.9252198464.

The spelling of 1952774489 in words is "one billion, nine hundred fifty-two million, seven hundred seventy-four thousand, four hundred eighty-nine".