487818649 has 2 divisors, whose sum is σ = 487818650. Its totient is φ = 487818648.

The previous prime is 487818613. The next prime is 487818677. The reversal of 487818649 is 946818784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435473424 + 52345225 = 20868^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 487818649 - 2²¹ = 485721497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487818649.

It is not a weakly prime, because it can be changed into another prime (487818679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243909324 + 243909325.

It is an arithmetic number, because the mean of its divisors is an integer number (243909325).

Almost surely, 2^487818649 is an apocalyptic number.

It is an amenable number.

487818649 is a deficient number, since it is larger than the sum of its proper divisors (1).

487818649 is an equidigital number, since it uses as much as digits as its factorization.

487818649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 55.

The square root of 487818649 is about 22086.6169659366. The cubic root of 487818649 is about 787.2018988949.

The spelling of 487818649 in words is "four hundred eighty-seven million, eight hundred eighteen thousand, six hundred forty-nine".