18064953444 has 24 divisors (see below), whose sum is σ = 42745243968. Its totient is φ = 5936838880.

The previous prime is 18064953443. The next prime is 18064953451. The reversal of 18064953444 is 44435946081.

It is a happy number.

It is a super-2 number, since 2×18064953444² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18064953393 and 18064953402.

It is not an unprimeable number, because it can be changed into a prime (18064953443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10600647 + ... + 10602350.

It is an arithmetic number, because the mean of its divisors is an integer number (1781051832).

Almost surely, 2^18064953444 is an apocalyptic number.

It is an amenable number.

18064953444 is an abundant number, since it is smaller than the sum of its proper divisors (24680290524).

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

18064953444 is a wasteful number, since it uses less digits than its factorization.

18064953444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21203075 (or 21203073 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 18064953444 in words is "eighteen billion, sixty-four million, nine hundred fifty-three thousand, four hundred forty-four".