18995541 has 8 divisors (see below), whose sum is σ = 26012064. Its totient is φ = 12321360.

The previous prime is 18995533. The next prime is 18995597. The reversal of 18995541 is 14559981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18995541 - 2³ = 18995533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18995493 and 18995502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18995521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85455 + ... + 85676.

It is an arithmetic number, because the mean of its divisors is an integer number (3251508).

Almost surely, 2^18995541 is an apocalyptic number.

It is an amenable number.

18995541 is a deficient number, since it is larger than the sum of its proper divisors (7016523).

18995541 is a wasteful number, since it uses less digits than its factorization.

18995541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171171.

The product of its digits is 64800, while the sum is 42.

The square root of 18995541 is about 4358.3874311493. The cubic root of 18995541 is about 266.8192888479.

The spelling of 18995541 in words is "eighteen million, nine hundred ninety-five thousand, five hundred forty-one".