18732900097 has 2 divisors, whose sum is σ = 18732900098. Its totient is φ = 18732900096.

The previous prime is 18732900061. The next prime is 18732900127. The reversal of 18732900097 is 79000923781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12986653681 + 5746246416 = 113959^2 + 75804^2 .

It is a cyclic number.

It is not a de Polignac number, because 18732900097 - 2²³ = 18724511489 is a prime.

It is not a weakly prime, because it can be changed into another prime (18732900397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9366450048 + 9366450049.

It is an arithmetic number, because the mean of its divisors is an integer number (9366450049).

Almost surely, 2^18732900097 is an apocalyptic number.

It is an amenable number.

18732900097 is a deficient number, since it is larger than the sum of its proper divisors (1).

18732900097 is an equidigital number, since it uses as much as digits as its factorization.

18732900097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 18732900097 in words is "eighteen billion, seven hundred thirty-two million, nine hundred thousand, ninety-seven".