1853734489 has 2 divisors, whose sum is σ = 1853734490. Its totient is φ = 1853734488.

The previous prime is 1853734483. The next prime is 1853734501. The reversal of 1853734489 is 9844373581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1841096464 + 12638025 = 42908^2 + 3555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1853734489 - 2³ = 1853734481 is a prime.

It is a super-2 number, since 2×1853734489² = 6872663111416182242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1853734481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 926867244 + 926867245.

It is an arithmetic number, because the mean of its divisors is an integer number (926867245).

Almost surely, 2^1853734489 is an apocalyptic number.

It is an amenable number.

1853734489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1853734489 is an equidigital number, since it uses as much as digits as its factorization.

1853734489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 52.

The square root of 1853734489 is about 43055.0170015063. The cubic root of 1853734489 is about 1228.4265002798.

The spelling of 1853734489 in words is "one billion, eight hundred fifty-three million, seven hundred thirty-four thousand, four hundred eighty-nine".