18982915277 has 2 divisors, whose sum is σ = 18982915278. Its totient is φ = 18982915276.

The previous prime is 18982915267. The next prime is 18982915291. The reversal of 18982915277 is 77251928981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18947797801 + 35117476 = 137651^2 + 5926^2 .

It is a cyclic number.

It is not a de Polignac number, because 18982915277 - 2³⁰ = 17909173453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18982915267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9491457638 + 9491457639.

It is an arithmetic number, because the mean of its divisors is an integer number (9491457639).

Almost surely, 2^18982915277 is an apocalyptic number.

It is an amenable number.

18982915277 is a deficient number, since it is larger than the sum of its proper divisors (1).

18982915277 is an equidigital number, since it uses as much as digits as its factorization.

18982915277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 59.

The spelling of 18982915277 in words is "eighteen billion, nine hundred eighty-two million, nine hundred fifteen thousand, two hundred seventy-seven".