18741946 has 8 divisors (see below), whose sum is σ = 29082420. Its totient is φ = 9047808.

The previous prime is 18741911. The next prime is 18741953. The reversal of 18741946 is 64914781.

It can be written as a sum of positive squares in 2 ways, for example, as 17313921 + 1428025 = 4161^2 + 1195^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 18741899 and 18741908.

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, 161511 + ... + 161626.

Almost surely, 2^18741946 is an apocalyptic number.

18741946 is a deficient number, since it is larger than the sum of its proper divisors (10340474).

18741946 is a wasteful number, since it uses less digits than its factorization.

18741946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323168.

The product of its digits is 48384, while the sum is 40.

The square root of 18741946 is about 4329.1969232180. The cubic root of 18741946 is about 265.6265983941.

The spelling of 18741946 in words is "eighteen million, seven hundred forty-one thousand, nine hundred forty-six".