18725946 has 8 divisors (see below), whose sum is σ = 37451904. Its totient is φ = 6241980.

The previous prime is 18725939. The next prime is 18725957. The reversal of 18725946 is 64952781.

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

18725946 is an admirable number.

It is a super-2 number, since 2×18725946² = 701322107189832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18725898 and 18725907.

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, 1560490 + ... + 1560501.

It is an arithmetic number, because the mean of its divisors is an integer number (4681488).

Almost surely, 2^18725946 is an apocalyptic number.

18725946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18725946 is a wasteful number, since it uses less digits than its factorization.

18725946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120996.

The product of its digits is 120960, while the sum is 42.

The square root of 18725946 is about 4327.3486108702. The cubic root of 18725946 is about 265.5509883949.

The spelling of 18725946 in words is "eighteen million, seven hundred twenty-five thousand, nine hundred forty-six".