1969147 has 2 divisors, whose sum is σ = 1969148. Its totient is φ = 1969146.

The previous prime is 1969111. The next prime is 1969153. The reversal of 1969147 is 7419691.

It is a strong prime.

It is an emirp because it is prime and its reverse (7419691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1969157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984573 + 984574.

It is an arithmetic number, because the mean of its divisors is an integer number (984574).

2^1969147 is an apocalyptic number.

1969147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969147 is an equidigital number, since it uses as much as digits as its factorization.

1969147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 1969147 is about 1403.2629831931. The cubic root of 1969147 is about 125.3408722705.

It can be divided in two parts, 1969 and 147, that added together give a square (2116 = 46²).

The spelling of 1969147 in words is "one million, nine hundred sixty-nine thousand, one hundred forty-seven".