6390045618 has 32 divisors (see below), whose sum is σ = 14012006400. Its totient is φ = 1926642960.

The previous prime is 6390045617. The next prime is 6390045631. The reversal of 6390045618 is 8165400936.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6390045618.

It is not an unprimeable number, because it can be changed into a prime (6390045617) 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, 230130 + ... + 256397.

It is an arithmetic number, because the mean of its divisors is an integer number (437875200).

Almost surely, 2^6390045618 is an apocalyptic number.

6390045618 is an abundant number, since it is smaller than the sum of its proper divisors (7621960782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6390045618 is a wasteful number, since it uses less digits than its factorization.

6390045618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486742.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 6390045618 is about 79937.7609018416. The cubic root of 6390045618 is about 1855.6724475297.

The spelling of 6390045618 in words is "six billion, three hundred ninety million, forty-five thousand, six hundred eighteen".