18853930 has 8 divisors (see below), whose sum is σ = 33937092. Its totient is φ = 7541568.

The previous prime is 18853883. The next prime is 18853931. The reversal of 18853930 is 3935881.

It can be written as a sum of positive squares in 2 ways, for example, as 16540489 + 2313441 = 4067^2 + 1521^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18853930.

It is not an unprimeable number, because it can be changed into a prime (18853931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942687 + ... + 942706.

Almost surely, 2^18853930 is an apocalyptic number.

18853930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18853930 is a deficient number, since it is larger than the sum of its proper divisors (15083162).

18853930 is a wasteful number, since it uses less digits than its factorization.

18853930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885400.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 18853930 is about 4342.1112376354. Note that the first 3 decimals coincide. The cubic root of 18853930 is about 266.1545919553.

It can be divided in two parts, 18 and 853930, that multiplied together give a triangular number (15370740 = T₅₅₄₄).

The spelling of 18853930 in words is "eighteen million, eight hundred fifty-three thousand, nine hundred thirty".