18203699147 has 2 divisors, whose sum is σ = 18203699148. Its totient is φ = 18203699146.

The previous prime is 18203699123. The next prime is 18203699167. The reversal of 18203699147 is 74199630281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18203699147 - 2¹² = 18203695051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18203699095 and 18203699104.

It is not a weakly prime, because it can be changed into another prime (18203699167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9101849573 + 9101849574.

It is an arithmetic number, because the mean of its divisors is an integer number (9101849574).

Almost surely, 2^18203699147 is an apocalyptic number.

18203699147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18203699147 is an equidigital number, since it uses as much as digits as its factorization.

18203699147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 18203699147 in words is "eighteen billion, two hundred three million, six hundred ninety-nine thousand, one hundred forty-seven".