18954393527 has 2 divisors, whose sum is σ = 18954393528. Its totient is φ = 18954393526.

The previous prime is 18954393509. The next prime is 18954393611. The reversal of 18954393527 is 72539345981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18954393527 - 2⁶ = 18954393463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18954393427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9477196763 + 9477196764.

It is an arithmetic number, because the mean of its divisors is an integer number (9477196764).

Almost surely, 2^18954393527 is an apocalyptic number.

18954393527 is a deficient number, since it is larger than the sum of its proper divisors (1).

18954393527 is an equidigital number, since it uses as much as digits as its factorization.

18954393527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 56.

The spelling of 18954393527 in words is "eighteen billion, nine hundred fifty-four million, three hundred ninety-three thousand, five hundred twenty-seven".