18497474 has 16 divisors (see below), whose sum is σ = 29056320. Its totient is φ = 8814960.

The previous prime is 18497467. The next prime is 18497489. The reversal of 18497474 is 47479481.

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 16904 + ... + 17964.

It is an arithmetic number, because the mean of its divisors is an integer number (1816020).

Almost surely, 2^18497474 is an apocalyptic number.

18497474 is a deficient number, since it is larger than the sum of its proper divisors (10558846).

18497474 is a wasteful number, since it uses less digits than its factorization.

18497474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its digits is 225792, while the sum is 44.

The square root of 18497474 is about 4300.8689819617. The cubic root of 18497474 is about 264.4665857354.

It can be divided in two parts, 18497 and 474, that multiplied together give a triangular number (8767578 = T₄₁₈₇).

The spelling of 18497474 in words is "eighteen million, four hundred ninety-seven thousand, four hundred seventy-four".