18963396 has 60 divisors (see below), whose sum is σ = 50128848. Its totient is φ = 6250608.

The previous prime is 18963389. The next prime is 18963401. The reversal of 18963396 is 69336981.

18963396 is a `hidden beast` number, since 1 + 8 + 9 + 633 + 9 + 6 = 666.

It is a super-2 number, since 2×18963396² = 719220775705632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34395 + ... + 34941.

Almost surely, 2^18963396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18963396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25064424).

18963396 is an abundant number, since it is smaller than the sum of its proper divisors (31165452).

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

18963396 is a wasteful number, since it uses less digits than its factorization.

18963396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 659 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 18963396 is about 4354.6981525704. The cubic root of 18963396 is about 266.6686965123.

The spelling of 18963396 in words is "eighteen million, nine hundred sixty-three thousand, three hundred ninety-six".