18459942 has 32 divisors (see below), whose sum is σ = 38759424. Its totient is φ = 5853600.

The previous prime is 18459941. The next prime is 18459949. The reversal of 18459942 is 24995481.

It is a junction number, because it is equal to n+sod(n) for n = 18459894 and 18459903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18459941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10533 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (1211232).

Almost surely, 2^18459942 is an apocalyptic number.

18459942 is an abundant number, since it is smaller than the sum of its proper divisors (20299482).

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

18459942 is a wasteful number, since it uses less digits than its factorization.

18459942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724.

The product of its digits is 103680, while the sum is 42.

The square root of 18459942 is about 4296.5034621189. The cubic root of 18459942 is about 264.2875940734.

The spelling of 18459942 in words is "eighteen million, four hundred fifty-nine thousand, nine hundred forty-two".