1808864147 has 2 divisors, whose sum is σ = 1808864148. Its totient is φ = 1808864146.

The previous prime is 1808864119. The next prime is 1808864149. The reversal of 1808864147 is 7414688081.

It is a strong prime.

It is an emirp because it is prime and its reverse (7414688081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1808864147 - 2⁸ = 1808863891 is a prime.

Together with 1808864149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1808864149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904432073 + 904432074.

It is an arithmetic number, because the mean of its divisors is an integer number (904432074).

Almost surely, 2^1808864147 is an apocalyptic number.

1808864147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808864147 is an equidigital number, since it uses as much as digits as its factorization.

1808864147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 1808864147 is about 42530.7435509891. The cubic root of 1808864147 is about 1218.4339277950.

The spelling of 1808864147 in words is "one billion, eight hundred eight million, eight hundred sixty-four thousand, one hundred forty-seven".