18953850 has 24 divisors (see below), whose sum is σ = 47005920. Its totient is φ = 5054320.

The previous prime is 18953839. The next prime is 18953867. The reversal of 18953850 is 5835981.

It is a junction number, because it is equal to n+sod(n) for n = 18953799 and 18953808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63030 + ... + 63329.

It is an arithmetic number, because the mean of its divisors is an integer number (1958580).

Almost surely, 2^18953850 is an apocalyptic number.

18953850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18953850 is an abundant number, since it is smaller than the sum of its proper divisors (28052070).

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

18953850 is a wasteful number, since it uses less digits than its factorization.

18953850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126374 (or 126369 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 18953850 is about 4353.6019570007. The cubic root of 18953850 is about 266.6239428082.

The spelling of 18953850 in words is "eighteen million, nine hundred fifty-three thousand, eight hundred fifty".