18896930 has 16 divisors (see below), whose sum is σ = 36631224. Its totient is φ = 6977280.

The previous prime is 18896921. The next prime is 18896939. The reversal of 18896930 is 3969881.

It is an interprime number because it is at equal distance from previous prime (18896921) and next prime (18896939).

It can be written as a sum of positive squares in 4 ways, for example, as 16703569 + 2193361 = 4087^2 + 1481^2 .

It is not an unprimeable number, because it can be changed into a prime (18896939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72551 + ... + 72810.

Almost surely, 2^18896930 is an apocalyptic number.

18896930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18896930 is a deficient number, since it is larger than the sum of its proper divisors (17734294).

18896930 is a wasteful number, since it uses less digits than its factorization.

18896930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145381.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 18896930 is about 4347.0599259730. The cubic root of 18896930 is about 266.3567771742.

The spelling of 18896930 in words is "eighteen million, eight hundred ninety-six thousand, nine hundred thirty".