449015109618 has 32 divisors (see below), whose sum is σ = 942862426560. Its totient is φ = 142353731520.

The previous prime is 449015109617. The next prime is 449015109671. The reversal of 449015109618 is 816901510944.

It is a super-2 number, since 2×449015109618² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449015109617) 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, 19246153 + ... + 19269468.

It is an arithmetic number, because the mean of its divisors is an integer number (29464450830).

Almost surely, 2^449015109618 is an apocalyptic number.

449015109618 is an abundant number, since it is smaller than the sum of its proper divisors (493847316942).

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

449015109618 is a wasteful number, since it uses less digits than its factorization.

449015109618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38515722.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 449015109618 in words is "four hundred forty-nine billion, fifteen million, one hundred nine thousand, six hundred eighteen".