1905620147 has 2 divisors, whose sum is σ = 1905620148. Its totient is φ = 1905620146.

The previous prime is 1905620111. The next prime is 1905620161. The reversal of 1905620147 is 7410265091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1905620147 - 2¹⁶ = 1905554611 is a prime.

It is not a weakly prime, because it can be changed into another prime (1905620107) 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, 952810073 + 952810074.

It is an arithmetic number, because the mean of its divisors is an integer number (952810074).

Almost surely, 2^1905620147 is an apocalyptic number.

1905620147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1905620147 is an equidigital number, since it uses as much as digits as its factorization.

1905620147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1905620147 is about 43653.4093399359. The cubic root of 1905620147 is about 1239.7823384429.

The spelling of 1905620147 in words is "one billion, nine hundred five million, six hundred twenty thousand, one hundred forty-seven".