1904438147 has 2 divisors, whose sum is σ = 1904438148. Its totient is φ = 1904438146.

The previous prime is 1904438113. The next prime is 1904438161. The reversal of 1904438147 is 7418344091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1904438147 - 2¹⁰ = 1904437123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1904438197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952219073 + 952219074.

It is an arithmetic number, because the mean of its divisors is an integer number (952219074).

Almost surely, 2^1904438147 is an apocalyptic number.

1904438147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904438147 is an equidigital number, since it uses as much as digits as its factorization.

1904438147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1904438147 is about 43639.8687784462. The cubic root of 1904438147 is about 1239.5259519473.

The spelling of 1904438147 in words is "one billion, nine hundred four million, four hundred thirty-eight thousand, one hundred forty-seven".