18419942 has 8 divisors (see below), whose sum is σ = 29255256. Its totient is φ = 8668192.

The previous prime is 18419927. The next prime is 18419963. The reversal of 18419942 is 24991481.

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

It is a super-3 number, since 3×18419942³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18419896 and 18419905.

It is a congruent 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, 270848 + ... + 270915.

It is an arithmetic number, because the mean of its divisors is an integer number (3656907).

Almost surely, 2^18419942 is an apocalyptic number.

18419942 is a deficient number, since it is larger than the sum of its proper divisors (10835314).

18419942 is a wasteful number, since it uses less digits than its factorization.

18419942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541782.

The product of its digits is 20736, while the sum is 38.

The square root of 18419942 is about 4291.8459897811. The cubic root of 18419942 is about 264.0965651488.

The spelling of 18419942 in words is "eighteen million, four hundred nineteen thousand, nine hundred forty-two".