1862438783449 has 2 divisors, whose sum is σ = 1862438783450. Its totient is φ = 1862438783448.

The previous prime is 1862438783411. The next prime is 1862438783453. The reversal of 1862438783449 is 9443878342681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1555819655625 + 306619127824 = 1247325^2 + 553732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1862438783449 - 2¹⁵ = 1862438750681 is a prime.

It is a super-2 number, since 2×1862438783449² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1862438783459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931219391724 + 931219391725.

It is an arithmetic number, because the mean of its divisors is an integer number (931219391725).

Almost surely, 2^{1862438783449} is an apocalyptic number.

It is an amenable number.

1862438783449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1862438783449 is an equidigital number, since it uses as much as digits as its factorization.

1862438783449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222953472, while the sum is 67.

The spelling of 1862438783449 in words is "one trillion, eight hundred sixty-two billion, four hundred thirty-eight million, seven hundred eighty-three thousand, four hundred forty-nine".