18975722 has 8 divisors (see below), whose sum is σ = 28757316. Its totient is φ = 9389952.

The previous prime is 18975707. The next prime is 18975731. The reversal of 18975722 is 22757981.

It can be written as a sum of positive squares in 2 ways, for example, as 18931201 + 44521 = 4351^2 + 211^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18975722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48713 + ... + 49100.

Almost surely, 2^18975722 is an apocalyptic number.

18975722 is a deficient number, since it is larger than the sum of its proper divisors (9781594).

18975722 is an equidigital number, since it uses as much as digits as its factorization.

18975722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97912.

The product of its digits is 70560, while the sum is 41.

The square root of 18975722 is about 4356.1131757566. The cubic root of 18975722 is about 266.7264612441.

The spelling of 18975722 in words is "eighteen million, nine hundred seventy-five thousand, seven hundred twenty-two".