18098501 has 2 divisors, whose sum is σ = 18098502. Its totient is φ = 18098500.

The previous prime is 18098497. The next prime is 18098519. The reversal of 18098501 is 10589081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13147876 + 4950625 = 3626^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 18098501 - 2² = 18098497 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18088501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9049250 + 9049251.

It is an arithmetic number, because the mean of its divisors is an integer number (9049251).

Almost surely, 2^18098501 is an apocalyptic number.

It is an amenable number.

18098501 is a deficient number, since it is larger than the sum of its proper divisors (1).

18098501 is an equidigital number, since it uses as much as digits as its factorization.

18098501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 18098501 is about 4254.2333034285. The cubic root of 18098501 is about 262.5513175558.

The spelling of 18098501 in words is "eighteen million, ninety-eight thousand, five hundred one".