12181498 has 12 divisors (see below), whose sum is σ = 21255642. Its totient is φ = 5220600.

The previous prime is 12181493. The next prime is 12181523. The reversal of 12181498 is 89418121.

It can be written as a sum of positive squares in only one way, i.e., 7800849 + 4380649 = 2793^2 + 2093^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12181493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62053 + ... + 62248.

Almost surely, 2^12181498 is an apocalyptic number.

12181498 is a deficient number, since it is larger than the sum of its proper divisors (9074144).

12181498 is a wasteful number, since it uses less digits than its factorization.

12181498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124317 (or 124310 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The square root of 12181498 is about 3490.2002807862. The cubic root of 12181498 is about 230.0913184958.

The spelling of 12181498 in words is "twelve million, one hundred eighty-one thousand, four hundred ninety-eight".