18613441 has 16 divisors (see below), whose sum is σ = 23649408. Its totient is φ = 14227200.

The previous prime is 18613433. The next prime is 18613451. The reversal of 18613441 is 14431681.

It is a cyclic number.

It is not a de Polignac number, because 18613441 - 2³ = 18613433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18613421) 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, 1801 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (1478088).

Almost surely, 2^18613441 is an apocalyptic number.

18613441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18613441 is a deficient number, since it is larger than the sum of its proper divisors (5035967).

18613441 is a wasteful number, since it uses less digits than its factorization.

18613441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632.

The product of its digits is 2304, while the sum is 28.

The square root of 18613441 is about 4314.3297277793. The cubic root of 18613441 is about 265.0181119696.

The spelling of 18613441 in words is "eighteen million, six hundred thirteen thousand, four hundred forty-one".