18948089597 has 2 divisors, whose sum is σ = 18948089598. Its totient is φ = 18948089596.

The previous prime is 18948089509. The next prime is 18948089627. The reversal of 18948089597 is 79598084981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17503025401 + 1445064196 = 132299^2 + 38014^2 .

It is a cyclic number.

It is not a de Polignac number, because 18948089597 - 2¹⁰ = 18948088573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18948079597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9474044798 + 9474044799.

It is an arithmetic number, because the mean of its divisors is an integer number (9474044799).

Almost surely, 2^18948089597 is an apocalyptic number.

It is an amenable number.

18948089597 is a deficient number, since it is larger than the sum of its proper divisors (1).

18948089597 is an equidigital number, since it uses as much as digits as its factorization.

18948089597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 68.

The spelling of 18948089597 in words is "eighteen billion, nine hundred forty-eight million, eighty-nine thousand, five hundred ninety-seven".