18050953 has 4 divisors (see below), whose sum is σ = 18126720. Its totient is φ = 17975188.

The previous prime is 18050941. The next prime is 18050971. The reversal of 18050953 is 35905081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35905081 = 617 ⋅58193.

It is a cyclic number.

It is not a de Polignac number, because 18050953 - 2²¹ = 15953801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18050933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37525 + ... + 38002.

It is an arithmetic number, because the mean of its divisors is an integer number (4531680).

Almost surely, 2^18050953 is an apocalyptic number.

It is an amenable number.

18050953 is a deficient number, since it is larger than the sum of its proper divisors (75767).

18050953 is an equidigital number, since it uses as much as digits as its factorization.

18050953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75766.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 18050953 is about 4248.6413122315. The cubic root of 18050953 is about 262.3211928176.

The spelling of 18050953 in words is "eighteen million, fifty thousand, nine hundred fifty-three".