11481898 has 4 divisors (see below), whose sum is σ = 17222850. Its totient is φ = 5740948.

The previous prime is 11481893. The next prime is 11481901. The reversal of 11481898 is 89818411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11042329 + 439569 = 3323^2 + 663^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11481898.

It is not an unprimeable number, because it can be changed into a prime (11481893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2870473 + ... + 2870476.

Almost surely, 2^11481898 is an apocalyptic number.

11481898 is a deficient number, since it is larger than the sum of its proper divisors (5740952).

11481898 is an equidigital number, since it uses as much as digits as its factorization.

11481898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740951.

The product of its digits is 18432, while the sum is 40.

The square root of 11481898 is about 3388.4949461376. The cubic root of 11481898 is about 225.5993763920.

The spelling of 11481898 in words is "eleven million, four hundred eighty-one thousand, eight hundred ninety-eight".