6418429489 has 2 divisors, whose sum is σ = 6418429490. Its totient is φ = 6418429488.

The previous prime is 6418429487. The next prime is 6418429499. The reversal of 6418429489 is 9849248146.

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., 3741401889 + 2677027600 = 61167^2 + 51740^2 .

It is a cyclic number.

It is not a de Polignac number, because 6418429489 - 2¹ = 6418429487 is a prime.

It is a super-2 number, since 2×6418429489² = 82392474210529602242, which contains 22 as substring.

Together with 6418429487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6418429487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209214744 + 3209214745.

It is an arithmetic number, because the mean of its divisors is an integer number (3209214745).

Almost surely, 2^6418429489 is an apocalyptic number.

It is an amenable number.

6418429489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418429489 is an equidigital number, since it uses as much as digits as its factorization.

6418429489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3981312, while the sum is 55.

The square root of 6418429489 is about 80115.1015040236. The cubic root of 6418429489 is about 1858.4159528663.

The spelling of 6418429489 in words is "six billion, four hundred eighteen million, four hundred twenty-nine thousand, four hundred eighty-nine".