18901850699 has 2 divisors, whose sum is σ = 18901850700. Its totient is φ = 18901850698.

The previous prime is 18901850683. The next prime is 18901850743. The reversal of 18901850699 is 99605810981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18901850699 - 2⁴ = 18901850683 is a prime.

It is not a weakly prime, because it can be changed into another prime (18901850399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9450925349 + 9450925350.

It is an arithmetic number, because the mean of its divisors is an integer number (9450925350).

Almost surely, 2^18901850699 is an apocalyptic number.

18901850699 is a deficient number, since it is larger than the sum of its proper divisors (1).

18901850699 is an equidigital number, since it uses as much as digits as its factorization.

18901850699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1399680, while the sum is 56.

The spelling of 18901850699 in words is "eighteen billion, nine hundred one million, eight hundred fifty thousand, six hundred ninety-nine".