64167918 has 16 divisors (see below), whose sum is σ = 128466000. Its totient is φ = 21367616.

The previous prime is 64167889. The next prime is 64167919. The reversal of 64167918 is 81976146.

It is a self number, because there is not a number n which added to its sum of digits gives 64167918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64167919) 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, 1708 + ... + 11456.

It is an arithmetic number, because the mean of its divisors is an integer number (8029125).

Almost surely, 2^64167918 is an apocalyptic number.

64167918 is an abundant number, since it is smaller than the sum of its proper divisors (64298082).

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

64167918 is a wasteful number, since it uses less digits than its factorization.

64167918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10851.

The product of its digits is 72576, while the sum is 42.

The square root of 64167918 is about 8010.4880001158. The cubic root of 64167918 is about 400.3495236607.

The spelling of 64167918 in words is "sixty-four million, one hundred sixty-seven thousand, nine hundred eighteen".