18212995 has 8 divisors (see below), whose sum is σ = 21948480. Its totient is φ = 14508480.

The previous prime is 18212993. The next prime is 18213007. The reversal of 18212995 is 59921281.

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

It is not a de Polignac number, because 18212995 - 2¹ = 18212993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18212993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6426 + ... + 8815.

It is an arithmetic number, because the mean of its divisors is an integer number (2743560).

Almost surely, 2^18212995 is an apocalyptic number.

18212995 is a deficient number, since it is larger than the sum of its proper divisors (3735485).

18212995 is a wasteful number, since it uses less digits than its factorization.

18212995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15485.

The product of its digits is 12960, while the sum is 37.

The square root of 18212995 is about 4267.6685672625. The cubic root of 18212995 is about 263.1038013061.

The spelling of 18212995 in words is "eighteen million, two hundred twelve thousand, nine hundred ninety-five".