1922147 has 2 divisors, whose sum is σ = 1922148. Its totient is φ = 1922146.

The previous prime is 1922119. The next prime is 1922153. The reversal of 1922147 is 7412291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1922147 - 2¹⁰ = 1921123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1922047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961073 + 961074.

It is an arithmetic number, because the mean of its divisors is an integer number (961074).

2^1922147 is an apocalyptic number.

1922147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922147 is an equidigital number, since it uses as much as digits as its factorization.

1922147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 1922147 is about 1386.4151614866. The cubic root of 1922147 is about 124.3356109540.

The spelling of 1922147 in words is "one million, nine hundred twenty-two thousand, one hundred forty-seven".