18954036 has 18 divisors (see below), whose sum is σ = 47911682. Its totient is φ = 6318000.

The previous prime is 18954029. The next prime is 18954037. The reversal of 18954036 is 63045981.

18954036 is a `hidden beast` number, since 1 + 89 + 540 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11696400 + 7257636 = 3420^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 526501 = 18954036 / (1 + 8 + 9 + 5 + 4 + 0 + 3 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18954037) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 263215 + ... + 263286.

Almost surely, 2^18954036 is an apocalyptic number.

It is an amenable number.

18954036 is an abundant number, since it is smaller than the sum of its proper divisors (28957646).

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

18954036 is a wasteful number, since it uses less digits than its factorization.

18954036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526511 (or 526506 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18954036 is about 4353.6233185704. The cubic root of 18954036 is about 266.6248149598.

The spelling of 18954036 in words is "eighteen million, nine hundred fifty-four thousand, thirty-six".