18425630 has 32 divisors (see below), whose sum is σ = 35868960. Its totient is φ = 6791040.

The previous prime is 18425623. The next prime is 18425633. The reversal of 18425630 is 3652481.

It is a junction number, because it is equal to n+sod(n) for n = 18425593 and 18425602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18425633) 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, 5720 + ... + 8340.

It is an arithmetic number, because the mean of its divisors is an integer number (1120905).

Almost surely, 2^18425630 is an apocalyptic number.

18425630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18425630 is a deficient number, since it is larger than the sum of its proper divisors (17443330).

18425630 is a wasteful number, since it uses less digits than its factorization.

18425630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 18425630 is about 4292.5085905563. The cubic root of 18425630 is about 264.1237463178.

The spelling of 18425630 in words is "eighteen million, four hundred twenty-five thousand, six hundred thirty".