75000018 has 8 divisors (see below), whose sum is σ = 150000048. Its totient is φ = 25000004.

The previous prime is 75000017. The next prime is 75000031. The reversal of 75000018 is 81000057.

It is a happy number.

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

75000018 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 74999958 and 75000003.

It is not an unprimeable number, because it can be changed into a prime (75000017) 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, 6249996 + ... + 6250007.

It is an arithmetic number, because the mean of its divisors is an integer number (18750006).

Almost surely, 2^75000018 is an apocalyptic number.

75000018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

75000018 is a wasteful number, since it uses less digits than its factorization.

75000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12500008.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 75000018 is about 8660.2550770748. The cubic root of 75000018 is about 421.7163663882.

The spelling of 75000018 in words is "seventy-five million, eighteen", and thus it is an aban number and an uban number.