18950436 has 60 divisors (see below), whose sum is σ = 51714432. Its totient is φ = 6039792.

The previous prime is 18950431. The next prime is 18950453. The reversal of 18950436 is 63405981.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18950436.

It is not an unprimeable number, because it can be changed into a prime (18950431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6181 + ... + 8723.

Almost surely, 2^18950436 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 18950436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25857216).

18950436 is an abundant number, since it is smaller than the sum of its proper divisors (32763996).

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

18950436 is a wasteful number, since it uses less digits than its factorization.

18950436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2571 counting only the distinct ones).

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

The square root of 18950436 is about 4353.2098502140. The cubic root of 18950436 is about 266.6079335928.

It can be divided in two parts, 189 and 50436, that added together give a 4-th power (50625 = 15⁴).

The spelling of 18950436 in words is "eighteen million, nine hundred fifty thousand, four hundred thirty-six".