1922905147 has 2 divisors, whose sum is σ = 1922905148. Its totient is φ = 1922905146.

The previous prime is 1922905129. The next prime is 1922905213. The reversal of 1922905147 is 7415092291.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1922905147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1922906147) 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, 961452573 + 961452574.

It is an arithmetic number, because the mean of its divisors is an integer number (961452574).

Almost surely, 2^1922905147 is an apocalyptic number.

1922905147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922905147 is an equidigital number, since it uses as much as digits as its factorization.

1922905147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1922905147 is about 43850.9423729981. The cubic root of 1922905147 is about 1243.5195591956.

The spelling of 1922905147 in words is "one billion, nine hundred twenty-two million, nine hundred five thousand, one hundred forty-seven".