18970630 has 32 divisors (see below), whose sum is σ = 40725504. Its totient is φ = 6220896.

The previous prime is 18970613. The next prime is 18970631. The reversal of 18970630 is 3607981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18970631) 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, 4282 + ... + 7501.

It is an arithmetic number, because the mean of its divisors is an integer number (1272672).

Almost surely, 2^18970630 is an apocalyptic number.

18970630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18970630 is an abundant number, since it is smaller than the sum of its proper divisors (21754874).

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

18970630 is a wasteful number, since it uses less digits than its factorization.

18970630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11820.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 18970630 is about 4355.5286705519. The cubic root of 18970630 is about 266.7026010603.

It can be divided in two parts, 18970 and 630, that added together give a square (19600 = 140²).

The spelling of 18970630 in words is "eighteen million, nine hundred seventy thousand, six hundred thirty".