18674906 has 8 divisors (see below), whose sum is σ = 28471764. Its totient is φ = 9184320.

The previous prime is 18674879. The next prime is 18674911. The reversal of 18674906 is 60947681.

It can be written as a sum of positive squares in 2 ways, for example, as 14891881 + 3783025 = 3859^2 + 1945^2 .

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

It is a super-2 number, since 2×18674906² = 697504228217672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76415 + ... + 76658.

Almost surely, 2^18674906 is an apocalyptic number.

18674906 is a deficient number, since it is larger than the sum of its proper divisors (9796858).

18674906 is a wasteful number, since it uses less digits than its factorization.

18674906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153136.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 18674906 is about 4321.4472112939. The cubic root of 18674906 is about 265.3095042838.

The spelling of 18674906 in words is "eighteen million, six hundred seventy-four thousand, nine hundred six".