18148898 has 8 divisors (see below), whose sum is σ = 27241500. Its totient is φ = 9068400.

The previous prime is 18148873. The next prime is 18148901. The reversal of 18148898 is 89884181.

It can be written as a sum of positive squares in 2 ways, for example, as 15737089 + 2411809 = 3967^2 + 1553^2 .

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

It is a super-2 number, since 2×18148898² = 658764997228808, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3848 + ... + 7148.

Almost surely, 2^18148898 is an apocalyptic number.

18148898 is a deficient number, since it is larger than the sum of its proper divisors (9092602).

18148898 is a wasteful number, since it uses less digits than its factorization.

18148898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052.

The product of its digits is 147456, while the sum is 47.

The square root of 18148898 is about 4260.1523446938. The cubic root of 18148898 is about 262.7947914211.

The spelling of 18148898 in words is "eighteen million, one hundred forty-eight thousand, eight hundred ninety-eight".