18426046 has 4 divisors (see below), whose sum is σ = 27639072. Its totient is φ = 9213022.

The previous prime is 18426041. The next prime is 18426053. The reversal of 18426046 is 64062481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64062481 = 7 ⋅9151783.

It is a junction number, because it is equal to n+sod(n) for n = 18425999 and 18426017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18426041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4606510 + ... + 4606513.

It is an arithmetic number, because the mean of its divisors is an integer number (6909768).

Almost surely, 2^18426046 is an apocalyptic number.

18426046 is a deficient number, since it is larger than the sum of its proper divisors (9213026).

18426046 is an equidigital number, since it uses as much as digits as its factorization.

18426046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9213025.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 18426046 is about 4292.5570467962. The cubic root of 18426046 is about 264.1257340318.

The spelling of 18426046 in words is "eighteen million, four hundred twenty-six thousand, forty-six".