18195141 has 16 divisors (see below), whose sum is σ = 25960640. Its totient is φ = 11301120.

The previous prime is 18195137. The next prime is 18195143. The reversal of 18195141 is 14159181.

It is a happy number.

It is not a de Polignac number, because 18195141 - 2² = 18195137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18195099 and 18195108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18195143) 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 15 ways as a sum of consecutive naturals, for example, 861 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (1622540).

Almost surely, 2^18195141 is an apocalyptic number.

It is an amenable number.

18195141 is a deficient number, since it is larger than the sum of its proper divisors (7765499).

18195141 is a wasteful number, since it uses less digits than its factorization.

18195141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316.

The product of its digits is 1440, while the sum is 30.

The square root of 18195141 is about 4265.5762799416. The cubic root of 18195141 is about 263.0178006043.

It can be divided in two parts, 18195 and 141, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 18195141 in words is "eighteen million, one hundred ninety-five thousand, one hundred forty-one".