18957681790283 has 2 divisors, whose sum is σ = 18957681790284. Its totient is φ = 18957681790282.

The previous prime is 18957681790279. The next prime is 18957681790337. The reversal of 18957681790283 is 38209718675981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18957681790283 - 2² = 18957681790279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18957681790283.

It is not a weakly prime, because it can be changed into another prime (18957686790283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9478840895141 + 9478840895142.

It is an arithmetic number, because the mean of its divisors is an integer number (9478840895142).

Almost surely, 2^{18957681790283} is an apocalyptic number.

18957681790283 is a deficient number, since it is larger than the sum of its proper divisors (1).

18957681790283 is an equidigital number, since it uses as much as digits as its factorization.

18957681790283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 365783040, while the sum is 74.

The spelling of 18957681790283 in words is "eighteen trillion, nine hundred fifty-seven billion, six hundred eighty-one million, seven hundred ninety thousand, two hundred eighty-three".