18952798 has 4 divisors (see below), whose sum is σ = 28429200. Its totient is φ = 9476398.

The previous prime is 18952777. The next prime is 18952799. The reversal of 18952798 is 89725981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89725981 = 5399 ⋅16619.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18952799) 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 as a sum of consecutive naturals, namely, 4738198 + ... + 4738201.

It is an arithmetic number, because the mean of its divisors is an integer number (7107300).

Almost surely, 2^18952798 is an apocalyptic number.

18952798 is a deficient number, since it is larger than the sum of its proper divisors (9476402).

18952798 is an equidigital number, since it uses as much as digits as its factorization.

18952798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9476401.

The product of its digits is 362880, while the sum is 49.

The square root of 18952798 is about 4353.4811358268. The cubic root of 18952798 is about 266.6190098864.

The spelling of 18952798 in words is "eighteen million, nine hundred fifty-two thousand, seven hundred ninety-eight".