18855941 has 16 divisors (see below), whose sum is σ = 22035888. Its totient is φ = 15974400.

The previous prime is 18855937. The next prime is 18855953. The reversal of 18855941 is 14955881.

18855941 = 3070² + 3071².

It can be written as a sum of positive squares in 8 ways, for example, as 2735716 + 16120225 = 1654^2 + 4015^2 .

It is not a de Polignac number, because 18855941 - 2² = 18855937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18855911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8021 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (1377243).

Almost surely, 2^18855941 is an apocalyptic number.

18855941 is the 3071-st centered square number.

It is an amenable number.

18855941 is a deficient number, since it is larger than the sum of its proper divisors (3179947).

18855941 is a wasteful number, since it uses less digits than its factorization.

18855941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152.

The product of its digits is 57600, while the sum is 41.

The square root of 18855941 is about 4342.3428008392. The cubic root of 18855941 is about 266.1640544892.

The spelling of 18855941 in words is "eighteen million, eight hundred fifty-five thousand, nine hundred forty-one".