18499954 has 8 divisors (see below), whose sum is σ = 30272688. Its totient is φ = 8409060.

The previous prime is 18499931. The next prime is 18500017. The reversal of 18499954 is 45999481.

It is a happy number.

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

It is a super-3 number, since 3×18499954³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18499898 and 18499907.

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, 420432 + ... + 420475.

It is an arithmetic number, because the mean of its divisors is an integer number (3784086).

Almost surely, 2^18499954 is an apocalyptic number.

18499954 is a deficient number, since it is larger than the sum of its proper divisors (11772734).

18499954 is a wasteful number, since it uses less digits than its factorization.

18499954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840920.

The product of its digits is 466560, while the sum is 49.

The square root of 18499954 is about 4301.1572861266. The cubic root of 18499954 is about 264.4784044270.

The spelling of 18499954 in words is "eighteen million, four hundred ninety-nine thousand, nine hundred fifty-four".