2190806147 has 2 divisors, whose sum is σ = 2190806148. Its totient is φ = 2190806146.

The previous prime is 2190806119. The next prime is 2190806161. The reversal of 2190806147 is 7416080912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2190806147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2190806147.

It is not a weakly prime, because it can be changed into another prime (2190806197) 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, 1095403073 + 1095403074.

It is an arithmetic number, because the mean of its divisors is an integer number (1095403074).

Almost surely, 2^2190806147 is an apocalyptic number.

2190806147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190806147 is an equidigital number, since it uses as much as digits as its factorization.

2190806147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2190806147 is about 46806.0481882417. The cubic root of 2190806147 is about 1298.7771828856. Note that the first 3 decimals are identical.

The spelling of 2190806147 in words is "two billion, one hundred ninety million, eight hundred six thousand, one hundred forty-seven".