78475018 has 8 divisors (see below), whose sum is σ = 117812448. Its totient is φ = 39204204.

The previous prime is 78475013. The next prime is 78475021. The reversal of 78475018 is 81057487.

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 (78475013) 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, 13596 + ... + 18487.

It is an arithmetic number, because the mean of its divisors is an integer number (14726556).

Almost surely, 2^78475018 is an apocalyptic number.

78475018 is a deficient number, since it is larger than the sum of its proper divisors (39337430).

78475018 is a wasteful number, since it uses less digits than its factorization.

78475018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33308.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 78475018 is about 8858.6126453300. The cubic root of 78475018 is about 428.1314594582.

The spelling of 78475018 in words is "seventy-eight million, four hundred seventy-five thousand, eighteen".