18098641 has 8 divisors (see below), whose sum is σ = 19774944. Its totient is φ = 16427520.

The previous prime is 18098627. The next prime is 18098651. The reversal of 18098641 is 14689081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18098641 - 2⁵ = 18098609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18098641.

It is not an unprimeable number, because it can be changed into a prime (18098611) 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, 11970 + ... + 13396.

It is an arithmetic number, because the mean of its divisors is an integer number (2471868).

Almost surely, 2^18098641 is an apocalyptic number.

18098641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18098641 is a deficient number, since it is larger than the sum of its proper divisors (1676303).

18098641 is a wasteful number, since it uses less digits than its factorization.

18098641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18098641 is about 4254.2497575953. The cubic root of 18098641 is about 262.5519945380.

The spelling of 18098641 in words is "eighteen million, ninety-eight thousand, six hundred forty-one".