518649465 has 16 divisors (see below), whose sum is σ = 847496448. Its totient is φ = 270727296.

The previous prime is 518649463. The next prime is 518649473. The reversal of 518649465 is 564946815.

It is not a de Polignac number, because 518649465 - 2¹ = 518649463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (518649463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367132 + ... + 368541.

It is an arithmetic number, because the mean of its divisors is an integer number (52968528).

Almost surely, 2^518649465 is an apocalyptic number.

It is an amenable number.

518649465 is a deficient number, since it is larger than the sum of its proper divisors (328846983).

518649465 is a wasteful number, since it uses less digits than its factorization.

518649465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735728.

The product of its digits is 1036800, while the sum is 48.

The square root of 518649465 is about 22773.8768109428. The cubic root of 518649465 is about 803.4483775292.

The spelling of 518649465 in words is "five hundred eighteen million, six hundred forty-nine thousand, four hundred sixty-five".