18061449 has 12 divisors (see below), whose sum is σ = 28013904. Its totient is φ = 10320744.

The previous prime is 18061427. The next prime is 18061453. The reversal of 18061449 is 94416081.

It is not a de Polignac number, because 18061449 - 2¹¹ = 18059401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18061249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61287 + ... + 61580.

It is an arithmetic number, because the mean of its divisors is an integer number (2334492).

Almost surely, 2^18061449 is an apocalyptic number.

It is an amenable number.

18061449 is a deficient number, since it is larger than the sum of its proper divisors (9952455).

18061449 is a wasteful number, since it uses less digits than its factorization.

18061449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122884 (or 122877 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 18061449 is about 4249.8763511425. The cubic root of 18061449 is about 262.3720265096.

The spelling of 18061449 in words is "eighteen million, sixty-one thousand, four hundred forty-nine".