78005818 has 8 divisors (see below), whose sum is σ = 127645920. Its totient is φ = 35457180.

The previous prime is 78005803. The next prime is 78005819. The reversal of 78005818 is 81850087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (78005819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1772838 + ... + 1772881.

It is an arithmetic number, because the mean of its divisors is an integer number (15955740).

Almost surely, 2^78005818 is an apocalyptic number.

78005818 is a deficient number, since it is larger than the sum of its proper divisors (49640102).

78005818 is a wasteful number, since it uses less digits than its factorization.

78005818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545732.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 78005818 is about 8832.0902395752. The cubic root of 78005818 is about 427.2764911229.

The spelling of 78005818 in words is "seventy-eight million, five thousand, eight hundred eighteen".