18470945 has 8 divisors (see below), whose sum is σ = 23331840. Its totient is φ = 13998960.

The previous prime is 18470939. The next prime is 18470957. The reversal of 18470945 is 54907481.

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

It is not a de Polignac number, because 18470945 - 2⁸ = 18470689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18470899 and 18470908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97121 + ... + 97310.

It is an arithmetic number, because the mean of its divisors is an integer number (2916480).

Almost surely, 2^18470945 is an apocalyptic number.

It is an amenable number.

18470945 is a deficient number, since it is larger than the sum of its proper divisors (4860895).

18470945 is a wasteful number, since it uses less digits than its factorization.

18470945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194455.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18470945 is about 4297.7837311805. The cubic root of 18470945 is about 264.3400929532.

The spelling of 18470945 in words is "eighteen million, four hundred seventy thousand, nine hundred forty-five".