8142874889 has 2 divisors, whose sum is σ = 8142874890. Its totient is φ = 8142874888.

The previous prime is 8142874877. The next prime is 8142874907. The reversal of 8142874889 is 9884782418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4849033225 + 3293841664 = 69635^2 + 57392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8142874889 is a prime.

It is a super-2 number, since 2×8142874889² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8142874819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071437444 + 4071437445.

It is an arithmetic number, because the mean of its divisors is an integer number (4071437445).

Almost surely, 2^8142874889 is an apocalyptic number.

It is an amenable number.

8142874889 is a deficient number, since it is larger than the sum of its proper divisors (1).

8142874889 is an equidigital number, since it uses as much as digits as its factorization.

8142874889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8257536, while the sum is 59.

The square root of 8142874889 is about 90237.8794575759. The cubic root of 8142874889 is about 2011.8360564555.

The spelling of 8142874889 in words is "eight billion, one hundred forty-two million, eight hundred seventy-four thousand, eight hundred eighty-nine".