18980097 has 4 divisors (see below), whose sum is σ = 25306800. Its totient is φ = 12653396.

The previous prime is 18980077. The next prime is 18980099. The reversal of 18980097 is 79008981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79008981 = 3 ⋅26336327.

It is a cyclic number.

It is not a de Polignac number, because 18980097 - 2¹⁰ = 18979073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18980099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163347 + ... + 3163352.

It is an arithmetic number, because the mean of its divisors is an integer number (6326700).

Almost surely, 2^18980097 is an apocalyptic number.

It is an amenable number.

18980097 is a deficient number, since it is larger than the sum of its proper divisors (6326703).

18980097 is an equidigital number, since it uses as much as digits as its factorization.

18980097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326702.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 18980097 is about 4356.6153146680. The cubic root of 18980097 is about 266.7469582876.

The spelling of 18980097 in words is "eighteen million, nine hundred eighty thousand, ninety-seven".