78018180 has 48 divisors (see below), whose sum is σ = 229951680. Its totient is φ = 19709568.

The previous prime is 78018133. The next prime is 78018181. The reversal of 78018180 is 8181087.

It is not an unprimeable number, because it can be changed into a prime (78018181) 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, 33079 + ... + 35358.

It is an arithmetic number, because the mean of its divisors is an integer number (4790660).

Almost surely, 2^78018180 is an apocalyptic number.

It is an amenable number.

78018180 is an abundant number, since it is smaller than the sum of its proper divisors (151933500).

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

78018180 is a wasteful number, since it uses less digits than its factorization.

78018180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68468 (or 68466 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 78018180 is about 8832.7900461859. The cubic root of 78018180 is about 427.2990608624.

The spelling of 78018180 in words is "seventy-eight million, eighteen thousand, one hundred eighty".