18470974 has 4 divisors (see below), whose sum is σ = 27706464. Its totient is φ = 9235486.

The previous prime is 18470957. The next prime is 18470987. The reversal of 18470974 is 47907481.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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 as a sum of consecutive naturals, namely, 4617742 + ... + 4617745.

It is an arithmetic number, because the mean of its divisors is an integer number (6926616).

Almost surely, 2^18470974 is an apocalyptic number.

18470974 is a deficient number, since it is larger than the sum of its proper divisors (9235490).

18470974 is an equidigital number, since it uses as much as digits as its factorization.

18470974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9235489.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 18470974 is about 4297.7871050111. The cubic root of 18470974 is about 264.3402312940.

The spelling of 18470974 in words is "eighteen million, four hundred seventy thousand, nine hundred seventy-four".