18954950 has 48 divisors (see below), whose sum is σ = 41616384. Its totient is φ = 6285600.

The previous prime is 18954917. The next prime is 18954979. The reversal of 18954950 is 5945981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18954898 and 18954907.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 9977 + ... + 11723.

It is an arithmetic number, because the mean of its divisors is an integer number (867008).

Almost surely, 2^18954950 is an apocalyptic number.

18954950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18954950 is an abundant number, since it is smaller than the sum of its proper divisors (22661434).

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

18954950 is a wasteful number, since it uses less digits than its factorization.

18954950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 18954950 is about 4353.7282873418. The cubic root of 18954950 is about 266.6291006110.

The spelling of 18954950 in words is "eighteen million, nine hundred fifty-four thousand, nine hundred fifty".