6410021489 has 2 divisors, whose sum is σ = 6410021490. Its totient is φ = 6410021488.

The previous prime is 6410021473. The next prime is 6410021537. The reversal of 6410021489 is 9841200146.

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., 4343864464 + 2066157025 = 65908^2 + 45455^2 .

It is a cyclic number.

It is not a de Polignac number, because 6410021489 - 2⁴ = 6410021473 is a prime.

It is not a weakly prime, because it can be changed into another prime (6410021419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205010744 + 3205010745.

It is an arithmetic number, because the mean of its divisors is an integer number (3205010745).

Almost surely, 2^6410021489 is an apocalyptic number.

It is an amenable number.

6410021489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6410021489 is an equidigital number, since it uses as much as digits as its factorization.

6410021489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 6410021489 is about 80062.6098063259. The cubic root of 6410021489 is about 1857.6041037281.

The spelling of 6410021489 in words is "six billion, four hundred ten million, twenty-one thousand, four hundred eighty-nine".