64038018 has 64 divisors (see below), whose sum is σ = 148377600. Its totient is φ = 18221760.

The previous prime is 64038011. The next prime is 64038019. The reversal of 64038018 is 81083046.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64038011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279528 + ... + 279756.

It is an arithmetic number, because the mean of its divisors is an integer number (2318400).

Almost surely, 2^64038018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64038018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74188800).

64038018 is an abundant number, since it is smaller than the sum of its proper divisors (84339582).

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

64038018 is a wasteful number, since it uses less digits than its factorization.

64038018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 64038018 is about 8002.3757722316. The cubic root of 64038018 is about 400.0791884886.

The spelling of 64038018 in words is "sixty-four million, thirty-eight thousand, eighteen".