18816970 has 8 divisors (see below), whose sum is σ = 33870564. Its totient is φ = 7526784.

The previous prime is 18816923. The next prime is 18816983. The reversal of 18816970 is 7961881.

It can be written as a sum of positive squares in 2 ways, for example, as 18740241 + 76729 = 4329^2 + 277^2 .

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

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, 940839 + ... + 940858.

Almost surely, 2^18816970 is an apocalyptic number.

18816970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18816970 is a deficient number, since it is larger than the sum of its proper divisors (15053594).

18816970 is a wasteful number, since it uses less digits than its factorization.

18816970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881704.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 18816970 is about 4337.8531556520. The cubic root of 18816970 is about 265.9805608875.

The spelling of 18816970 in words is "eighteen million, eight hundred sixteen thousand, nine hundred seventy".